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【334353】江苏省2021年普通高考对口单招文化统考数学试卷

时间:2025-01-21 18:06:05 作者: 字数:12583字
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江苏省2021年普通高考对口单招文化统考数学试卷

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总分

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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



评卷人

得分




一、选择题

1.已知集合 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,若 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值是( )
A
-2
B
-1
C
0
D
1

2.若数组 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则实数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 等于( )
A
-3
B
-2
C
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
D
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

3.若复数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的虚部等于( )
A
4
B
2
C
-2
D
-4

4.逻辑表达式 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 等于( )
A
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
B
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
C
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
D
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

5.已知 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的展开式中 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的系数为40,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 等于( )
A
5
B
6
C
7
D
8

6.已知双曲线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的一条渐近线与直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 平行,则该双曲线的离心率是( )
A
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
B
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
C
2
D
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

7.若圆锥的轴截面为等腰直角三角形,则它的底面积与侧面积之比是( )
A
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
B
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
C
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
D
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

8.下图是某项工程的网络图(单位:),则从开始节点①到终止节点⑧的路径共有( )
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
A
14
B
12
C
9
D
7

9.若函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的最小正周期为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则它的一条对称轴是( )
A
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
B
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
C
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
D
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

10.已知奇函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 是定义在 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 上的单调函数,若正实数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的最小值是( )
A
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
B
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
C
2
D
4

评卷人

得分




二、填空题

11.下图是一个程序框图,执行该程序框图,则输出的n___________.
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

12.已知等比数列 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的公比为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 成等差数列,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值是___________.

13.已知 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值是_________.

14.以抛物线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的焦点为圆心,且与直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为参数)相切的圆的标准方程是____________.

15.已知函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,若其图像上存在互异的三个点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,使得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则实数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的取值范围是__________.

评卷人

得分




三、解答题

16.已知函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的定义域是 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
1)求实数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的取值范围;
2)解关于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的不等式 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

17.已知函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 是定义在 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 上的偶函数,当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ( <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ).又直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 恒过定点A,且点A在函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 像上.
(1)
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
(2)
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
(3)
求函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的解析式.

18.已知关于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的二次函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
1)若 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,求事件 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 上是增函数}的概率;
2)若 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,求事件 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> “方程 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 没有实数根”的概率.

19.已知向量 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,设函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
1)求函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的最大值;
2)在锐角 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 中,三个角 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 所对的边分别为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,若 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,求 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的面积.

20.某化工厂引进一条先进生产线生产某种化工产品,其生产的总成本 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 万元与年产量 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 吨之间的函数关系可以近似地表示为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,已知此生产线的年产量最小为60吨,最大为110.
1)年产量为多少吨时,生产每吨产品的平均成本最低?并求最低平均成本;
2)若每吨产品的平均出厂价为24万元,且产品能全部售出,则年产量为多少吨时,可以获得最大利润?并求最大利润.

21.已知数列 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
1)求证:数列 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为等比数列;
2)求数列 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的通项公式;
3)求数列 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的前 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 项和 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

22.某广告公司接到幸福社区制作疫情防控宣传标牌的任务,要制作文字标牌4个,绘画标牌5个,该公司现有两种规格的原料,甲种规格原料每张3m2,可做文字标牌1个和绘画标牌2;乙种规格原料每张2m2,可做文字标牌2个和绘画标牌1.问两种规格的原料各用多少张时,才能使总的用料面积最小?并求最小用料面积.

23.已知椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的离心率为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
1)证明: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
2)若点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 在椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的内部,过点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 交椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 两点, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为线段 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的中点,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
求直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程;
求椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的标准方程.

参考答案

1.B

【解析】
根据集合N和并集,分别讨论a,再验证即可.
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,若 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 经验证意;
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 经验证满.
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
B.

2.C

【解析】
数组的基本运算,由数组相等转化为对应项相等.
因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:C.

3.C

【解析】
利用复数的运算性质,化简得出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
若复数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 满足 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的虚部等于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:C.

4.D

【解析】
从集合角度去理解逻辑表达式
如图, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 类似于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 类似于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
故选:D.

5.A

【解析】
写出x2一步即可解出.
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
A.

6.D

【解析】
写出渐近线,再利用斜率相等,进而得到离心率
双曲线的渐近线为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,易知 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 与直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 平行,
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:D.

7.C

【解析】
根据题意作图,由轴截面得出母线与底面圆半径的等量关系,再套公式求解.
根据题意作图,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
设圆锥的底面圆半径为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,高为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,母线长为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
若圆锥的轴截面为等腰直角三角形,
则有 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
该圆锥的底面积与侧面积比值为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:C.

8.B

【解析】
根据分步乘法计算原理即可求解.
由图可知,由① <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ④有3条路径,由④ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ⑥有2条路径,由⑥ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ⑧有2条路径,根据分步乘法计算原理可得从① <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ⑧共有 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 条路径.
故选:B

9.A

【解析】
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,令 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,从而可得到本题答案.
由题,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的对称轴为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的一条对称轴为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:A

10.B

【解析】
由奇函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 是定义在 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 上的单调函数, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,化简后利用基本不等式可求得结果
解:因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
因为奇函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 是定义在 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 上的单调函数,
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
当且仅当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时取等号,
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的最小值是 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故选:B

11.2

【解析】
程序框图中的循环结构,一般需重复计算,根据判断框中的条件,确定何时终止循环,输出结果.
初始值: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,进入循环;
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,进入循环;
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,终止循环,输出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故答案为:2.

12.4

【解析】
根据三数成等差数列列等式,再将 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 用含 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的式子表示,代入等式求解.
因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为等比数列,且公比为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 成等差数列,
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故答案为: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

13. <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

【解析】
先用诱导公式化简,再通过同角三角函数的基本关系求得.
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故答案为: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

14. <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

【解析】
将抛物线方程化为标准方程,直线参数方程化为普通方程,结合点到直线的距离公式求得圆的半径,进而得答案.
解:将抛物线方程化为标准方程得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以焦点坐标为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
将直线的参数方程化为普通方程得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 到直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的距离为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以所求圆的方程为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
故答案为: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

15. <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

【解析】
先画出函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的图象,转化为函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 与函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的图象有三个不同的交点,再画函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的图象,观察交点的个数,从而求得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的取值范围.
解:画出函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的图象如下图,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
由题意得函数图象上存在互异的三个点,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
则可看做函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 与函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的图象有三个不同的交点,
由图知,当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时,有且仅有两个交点,
要使两个图象有三个不同的交点,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的取值范围为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
故答案为: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

16.1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ;(2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

【解析】
1)本题可根据对数函数的性质得出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 恒成立,然后通过 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 即可得出结果;
2)本题首先可根据 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 得出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,然后通过计算即可得出结果.
1)因为函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的定义域是 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 恒成立,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的取值范围为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
故不等式 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的解集为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

17.(1)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> (2)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> (3)  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

【解析】
(1)
求出直线所过定点,由定点在函数图象上,求出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值;
(2)
利用偶函数的性质,求 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,进而可求出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值;
(3)
利用偶函数的性质求出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的表达式.
(1)
由直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 过定点可得: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 过定点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
又因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
(2)
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
因为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为偶函数,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
(3)
(1)知,当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为偶函数,所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
综上可知, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

18.1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ;(2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

【解析】
1)根据题意有: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且对称轴 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,求出基本事件总数,再求出满足事件 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的事件数,然后利用古典概型概率公式求解;
2)方程 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 无实根,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,画出图形,由测度比是面积比得答案.
1)根据题意有: <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,且对称轴 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
基本事件总数为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
满足事件 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的事件数为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 共有5个,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> A <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
2)方程 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 根, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

19.1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ;(2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

【解析】
1)结合平面向量的数量积运算、二倍角公式和辅助角公式,可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,进而可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的最大值;
2)由锐角 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,推出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,再结合 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> B <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,求得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,由正弦定理知 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,再利用余弦定理求出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,最后由三角形面公式得解.
1)因 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以函数 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 为锐角三角形, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

20.1)年产量为100吨时,平均成本最低为16万元;(2)年产量为110吨时,最大利润为860万元.

【解析】
1)列出式子,通过基本不等式即可求得;
2)将式子化简后,通过二次函数的角度求得最大值.
1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
当且仅当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 取“=”,符合题意;
年产量为100吨时,平均成本最低为16万元.
2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,∴当 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
答:年产量为110吨时,最大利润为860万元.

21.1)见解析;(2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ;(3 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>

【解析】
1)计算得到 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得到答案.
2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得到数列通项公式.
3)根据分组求和法计算得到答案.
1)由 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,∴ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,又 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 是首项为3,公比为3的等比数列.
2 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,∴ <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
3 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

22.2块,乙1块,8 m2.

【解析】
设需要甲种原料 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 张,乙种原料 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 张,则所用原料的总面积 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,由题意列出关于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的不等式组,作出可行域,化目标函数为直线方程的斜截式,数形结合得到最优解,把最优解的坐标代入目标函数得答案.
设需要甲种原料 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 张,乙种原料 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 张,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所用原料的总面积 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
由约束条件作出可行域如图,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
联立 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,由图可知,当直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 时,
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 取得最小值为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
故需要甲种原料2张,乙种原料1张,才能使总的用料面积最小,为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> m2

23.1)证明见解析;(2)① <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ;② <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .

【解析】
1)由 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 可证得结论成立;
2)①设点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,利用点差法可求得直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的斜率,利用点斜式可得出所求直线的方程;
将直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程与椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程联立,列出韦达定理,由 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 可得出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,利用平面向量数量积的坐标运算可得出关于 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的等式,可求出 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的值,即可得出椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程.
1 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,因此, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
2)①由(1)知,椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 在椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的内部时, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
设点 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,则 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,所以, <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
由已知可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,两式作差得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
所以,直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 方程为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,即 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
所以,直线 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
联立 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,消去 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
由韦达定理可得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> ,而 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>  <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
解得 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 合乎题意,故 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a>
因此,椭圆 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> 的方程为 <a href="/tags/37/" title="普通" class="c1" target="_blank">普通</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/558/" title="江苏" class="c1" target="_blank">江苏</a> <a href="/tags/744/" title="江苏省" class="c1" target="_blank">江苏省</a> <a href="/tags/760/" title="文化" class="c1" target="_blank">文化</a> .


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