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【334340】2024年普通高等学校春季招生数学考试上海卷

时间:2025-01-21 18:03:53 作者: 字数:15790字
简介:

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学校: 姓名: 班级: 考号:



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绝密★启用前

153580-5 2024年普通高等学校春季招生考试(上海卷)2025高考试题攻略 第1辑 一年真题风标卷 数学》


学校:___________姓名:___________班级:___________考号:___________


题号

总分

得分






注意事项:

1.答题前填写好自己的姓名、班级、考号等信息

2.请将答案正确填写在答题卡上


一、填空题:本题共12小题,1~6题每小题4,7~12题每小题5,54分。

1.函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的定义域为    

2.直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的倾斜角为    

3.若复数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =i(i为虚数单位), <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =    

4.在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的二项展开式中  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 项的系数为    

5.在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>       <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>   

6.在等差数列  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是数列  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的前  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 项和,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <0,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的取值范围是    

7.已知实数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 满足  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小值为    

8.在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 若以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为焦点,则过  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 点的双曲线的离心率  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     

9.已知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的解集为    

10.在棱柱  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,底面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为平行四边形  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =5,则异面直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的夹角为    

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

11.已知正方形展区  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的边长为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的距离都为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的距离都为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 若有一个圆形通道经过  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 两点,且与  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 只有一个交点,则圆形通道的周长为    km(π  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,结果保留两位小数)

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

12.已知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,若实数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 满足{ai+aj|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <j≤4,i,jN}={bi+bj|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <j≤4,i,jN},则有序数组  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     

二、选择题:本题共4小题,13~14题每小题4,15~16题每小题5,18分。

13.已知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则下列不等式恒成立的是(      )

A <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  

B <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

C <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

D <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

14.空间中有两个不同的平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,两条不同的直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则下列说法正确的是

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

15.有四个礼品盒,已知前三个礼品盒中分别只装了一支钢笔、一本书以及一个笔袋,第四个盒子中钢笔、书、笔袋都有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 现随机抽取一个盒子,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为抽中的盒子里面有钢笔,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为抽中的盒子里面有书,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为抽中的盒子里面有笔袋  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 则下面正确的选项是(      )

A  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 互斥        B  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 相互独立

C  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 互斥      D <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 独立

16.若函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 满足  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则称函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为延展函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

已知延展函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,满足当  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 给定以下两个命题:

存在直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 与曲线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 有无穷多个交点;

存在直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 与曲线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 有无穷多个交点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

则正确的选项是

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是真命题,是真命题    

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是假命题,是假命题

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是真命题,是假命题    

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是假命题,是真命题

三、解答题:本题共5小题,78分。解答应写出文字说明、证明过程或演算步骤。

17(14)已知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的值域;

(2)已知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> > π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小正周期为 π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 上有三个零点,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的取值范围  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

18(14)如图  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为圆锥的三条母线,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)证明:  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;

(2)若圆锥的侧面积为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为底面直径  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,求二面角  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的大小  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

19(14)共有136箱水果,其中一级果102,二级果34  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)从中随机挑出两箱水果,求一级果、二级果各一箱的概率;

(2)用按比例分配的分层随机抽样方法,从上述136箱水果中抽出8箱水果,求一级果、二级果各几箱;

(3)抽出若干箱水果,其中,一级果120,单果的平均质量为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,方差为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;二级果48,单果的平均质量为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,方差为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,168个水果质量的平均数与方差,并预估果园中水果的单果质量(结果保留两位小数).

20(18)在平面直角坐标系  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,已知点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为椭圆  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> : <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1上一点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 分别为椭圆的左、右焦点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)若点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的横坐标为2,|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |的值  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(2)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的上、下顶点分别为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的面积为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的面积为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |的取值范围  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(3)若点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 轴上方,设直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 交于点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 轴交于点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的延长线与  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 交于点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 轴下方是否存在点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,使得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =λ( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )(λR)成立?若存在,请求出点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的坐标;若不存在,请说明理由  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

21(18)对于定义在R上的函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,记集合M(a)=Ma={t|t=f(x)-f(a),xa},L(a)=La={t|t=f(x)-f(a),xa}.

(1)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;

(2)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,求证:对任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,都有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,且存在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,使得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;

(3)已知定义在R上的函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 有最小值,证明:“  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是偶函数”的充要条件为“对任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,都有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

参考答案

一、填空题:本题共12小题,1~6题每小题4,7~12题每小题5,54分。

1. (0,+∞)

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >0,故函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的定  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


2.  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

线方程  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 可化  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,线的斜率  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则倾斜角  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


3.  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


4. 15

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 展开式的通项为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,…,6,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的系数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


5.  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,由正弦定理得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


6. (-∞,-4)

由等差数列的前  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 和公式得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <0,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <-4,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的取  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


7. 12

由基本不等式得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =12|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,当且  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 取等号(:注意验证是否能取到等号),  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小值为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


8. 3

双曲线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 焦点,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以焦距  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 双曲线过  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以由双曲线的定  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,故双曲线的离心率  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


9. (-∞,1]

意知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 可化  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <0  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 可化  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <0,所以不等式恒成立,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

上所述  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的解集  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


10. arccos  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )+ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ·( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ).

底面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是平行四, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =0, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ·( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> · <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =| <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> || <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |cos< <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,cos< <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,< <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


11.  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 原点,建立如所示的平面直角坐,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的中点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 设圆形通道所在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的垂直平分线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 又直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的斜率  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的垂直平分线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的斜率  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的方程  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

为圆  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 只有一个公共点,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 相切,设圆  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的半径  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> km <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,则圆  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >1.2(舍去)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

形通道的周 π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


12. 48

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,{ai+aj|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <j≤4,i,jN}={6,10,12,18,20,24}.不妨  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,必有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以b1+b2=6,b1+b3=10,b2+b4=20,b3+b4=24(提示:判断出  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的确定,未知项进讨论).

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ;

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

,有序数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 共有2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =48  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


二、选择题:本题共4小题,13~14题每小题4,15~16题每小题5,18分。

13. B

A,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |>|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,A错误;

B,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,B正确;

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >0,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的符号不确定,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的大小关系不确定,C错误;

D,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,D错误  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


14. A

A,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,A正确;

B,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 斜交、垂直、平行等均有可能,B错误;

C,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 相交、平行、异面均有可能,C错误;

D,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,D错误  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


15. B

A,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 和事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 可以同时发,即抽中的是第四个礼盒,礼盒中既有,又有,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 不互斥,A错误;

B,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>   <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>   <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 相互独立,B正确;

C,若抽中的是第四个礼盒,事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 与事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 时发,C错误;

D,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>   <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>   <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 不独立,D错误  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


16. D

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 延展函数,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以当  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以当  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,…,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是以1周期的周期函数,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 同理,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 延展函数,所以当  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以当  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,…,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> !  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> !,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

:1,线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 与曲线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 有有限个交点,假命;

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 1

:2,存在直线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> !  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> !  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> !,线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 与函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> (9,10)上的像重合,所以有无个交点,真命  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 2


三、解答题:本题共5小题,78分。解答应写出文字说明、证明过程或演算步骤。

17. 1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>    (2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以sin <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以函数  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 上的 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(2)意知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小正周期  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 上有三个零点,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> < <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的取围为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


18. 1)见解析    ()π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)明】如,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的中点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      2

又因  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      4

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      5

(2)【解】由(1)意知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 两两垂直,,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 原点建立空直角坐  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为圆锥积为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 底面直径  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以底面半径1,线长为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      7

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

P(0,0, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ),B(1,0,0),A(0,1,0),C(-1,0,0),所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =(0,1,- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ), <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =(1,0,- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ), <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =(-1,0,- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ).     8

平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的法向量  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的一个法向量n=( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,1).     10

平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的法向量  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,平面  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的一个法向量m=(- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,1).     12

cos<  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,     13

可知二面角  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 为钝,

所以二面角  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的大小 π <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


19. 1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     (26   2     () <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     1  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)事件  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 恰好到一果、二果各一箱,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以一果、二果各一箱的概率 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(2)果箱数与二果箱数之比10234=31,所以一果抽取 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =6(),果抽取 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =2().

(3)知一果的果平均 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,果的平均 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

168个水果量的平均数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ×(120 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> +48 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      8

量的方差 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,量的方差 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以168个水果量的方差 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> [ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> +( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )2]+ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> [ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> +( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> - <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )2]≈ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =287.69().

所以168个水果量的平均数约为  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,方差约为1  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>


20. 1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     (2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      (3)存在, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(1)意可得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1,且点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的横坐标为2,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ± <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

即点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的坐标为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(2)意可知M1(0, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ),M2(0,- <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ).  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |·|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |=2|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |·|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,2|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |≥ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1 ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 椭圆上且不为椭圆,

0<  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <2, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |= <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> = <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <2,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> < <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |的取 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(3)存在意的点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,A(x1,y1),B(x2,y2)(y1>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <0).

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 关于  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 轴对,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 关于  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 轴对,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

同理可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 平行,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

整理得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

线  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的方程x=my+2(m<0),椭圆方程 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1立得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1,整理可得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >0,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> , <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 代入 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =1,解得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

所以在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 下方存在点  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,使得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> =λ( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> + <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> )成立  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>      18


21. () <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>       <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>     (2)见解析    (3)见解析

(1)【解】由可得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,所以  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(2)明】M(a)=Ma={t|t=f(x)-f(a),xa}={t|t=x3-3x2-(a3-3a2),xa},

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 化如表:

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(-∞,0)

0

(0,2)

2

(2,+∞)

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

0

0

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

极大

极小

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 单调递,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

0<  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <2  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> (0,2)单调递,(2,+∞)单调递,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

0<  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> <2,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> >-4,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> (-∞,0)单调递,(0,2)单调递,(2,+∞)单调递,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,由以上  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的分析知  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> (-∞,0]单调递,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,即存在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,使得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

上可得,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,且存在  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,使得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

(3)明】必要性:

M-c={t|t=f(x)-f(-c),x≥-c},Lc={t|t=f(x)-f(c),xc}.

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是偶函数,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 上的域相等  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,必要性成立  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

充分性:

于任意正  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,均有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,其中M-c={t|t=f(x)-f(-c),x≥-c},Lc={t|t=f(x)-f(c),xc}.

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 有最小,不妨  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,由于  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 任意,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小元素  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小元素  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |恒成立  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,同理可得  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |恒成立,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

c(-|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |,|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小元素f(|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |)-f(-c),

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 的最小元素f(-|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |)-f(c),M-c=Lc,f(|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |)=f(-|  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> |),  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

同理,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 恒成立  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

,任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是偶函数,充分性成立  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> 是偶函数的充要条件任意  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a> ,都有  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/261/" title="考试" class="c1" target="_blank">考试</a> <a href="/tags/491/" title="学校" class="c1" target="_blank">学校</a> <a href="/tags/1135/" title="招生" class="c1" target="_blank">招生</a>