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【349946】年上海市中考数学试卷

时间:2025-03-05 22:03:58 作者: 字数:14524字
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上海市中考数学试卷

一、选择题:(本大题共6题,每题4分,满分24分)【下列各题的四个选项中,有且只有一个选项是正确的,选择正确项的代号并填涂在答题纸的相应位置上】

1.(4分)下列二次根式中,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是同类二次根式的是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2.(4分)用换元法解方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时,若设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则原方程可化为关于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的方程是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

3.(4分)我们经常将调查、收集得来的数据用各类统计图进行整理与表示.下列统计图中,能凸显由数据所表现出来的部分与整体的关系的是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.条形图 B.扇形图

C.折线图 D.频数分布直方图

4.(4分)已知反比例函数的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么这个反比例函数的解析式是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

5.(4分)下列命题中,真命题是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.对角线互相垂直的梯形是等腰梯形

B.对角线互相垂直的平行四边形是正方形

C.对角线平分一组对角的平行四边形是菱形

D.对角线平分一组对角的梯形是直角梯形

6.(4分)如果存在一条线把一个图形分割成两个部分,使其中一个部分沿某个方向平移后能与另一个部分重合,那么我们把这个图形叫做平移重合图形.下列图形中,平移重合图形是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.平行四边形 B.等腰梯形 C.正六边形 D.圆

二、填空题:(本大题共12题,每题4分,满分48分)【请将结果直接填入答题纸的相应位置上】

7.(4分)计算: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>   

8.(4分)已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 3)的值是  

9.(4分)已知正比例函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是常数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的图象经过第二、四象限,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值随着 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值增大而  .(填“增大”或“减小”  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

10.(4分)如果关于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 有两个相等的实数根,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值是  

11.(4分)如果从1234567891010个数中任意选取一个数,那么取到的数恰好是5的倍数的概率是  

12.(4分)如果将抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 向上平移3个单位,那么所得新抛物线的表达式是  

13.(4分)为了解某区六年级8400名学生中会游泳的学生人数,随机调查了其中400名学生,结果有150名学生会游泳,那么估计该区会游泳的六年级学生人数约为  

14.(4分)《九章算术》中记载了一种测量井深的方法.如图所示,在井口 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 处立一根垂直于井口的木杆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,从木杆的顶端 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 观察井水水岸 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,视线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与井口的直径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,如果测得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米,那么井深 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>   米.

Shape1

15.(4分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是平行四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的对角线,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么向量 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 用向量 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 表示为  

Shape2

16.(4分)小明从家步行到学校需走的路程为1800米.图中的折线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 反映了小明从家步行到学校所走的路程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (米 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与时间 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (分钟)的函数关系,根据图象提供的信息,当小明从家出发去学校步行15分钟时,到学校还需步行  米.

Shape3

17.(4分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,联结 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> .如果将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 沿直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 翻折后,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的对应点为点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 到直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的距离为  

Shape4

18.(4分)在矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在对角线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上,圆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的半径为2,如果圆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的各边都没有公共点,那么线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 长的取值范围是  

三、解答题:(本大题共7题,满分78分)

19.(10分)计算: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

20.(10分)解不等式组: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

21.(10分)如图,在直角梯形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求梯形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的面积;

2)联结 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的正切值.

Shape5

22.(10分)去年某商店“十一黄金周”进行促销活动期间,前六天的总营业额为450万元,第七天的营业额是前六天总营业额的 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求该商店去年“十一黄金周”这七天的总营业额;

2)去年,该商店7月份的营业额为350万元,89月份营业额的月增长率相同,“十一黄金周”这七天的总营业额与9月份的营业额相等.求该商店去年89月份营业额的月增长率.

23.(12分)已知:如图,在菱形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 分别在边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2)如果 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape6

24.(12分)在平面直角坐标系 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 轴、 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 轴分别交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (如图).抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的长;

2)如果抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 经过线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上的另一点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求这条抛物线的表达式;

3)如果抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的顶点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 位于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 内,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的取值范围.

Shape7

25.(14分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的外接圆, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是等腰三角形时,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的大小;

3)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时,求边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的长.

Shape8


上海市中考数学试卷

参考答案与试题解析

一、选择题:(本大题共6题,每题4分,满分24分)【下列各题的四个选项中,有且只有一个选项是正确的,选择正确项的代号并填涂在答题纸的相应位置上】

1.(4分)下列二次根式中,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是同类二次根式的是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的被开方数不相同,故不是同类二次根式;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 不是同类二次根式;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 被开方数相同,故是同类二次根式;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 被开方数不同,故不是同类二次根式.

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2.(4分)用换元法解方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时,若设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则原方程可化为关于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的方程是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解:把 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 代入原方程得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,转化为整式方程为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

3.(4分)我们经常将调查、收集得来的数据用各类统计图进行整理与表示.下列统计图中,能凸显由数据所表现出来的部分与整体的关系的是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.条形图 B.扇形图

C.折线图 D.频数分布直方图

【解答】解:统计图中,能凸显由数据所表现出来的部分与整体的关系的是扇形图,

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

4.(4分)已知反比例函数的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么这个反比例函数的解析式是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解:设反比例函数解析式为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 代入,得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

所以这个反比例函数解析式为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

5.(4分)下列命题中,真命题是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.对角线互相垂直的梯形是等腰梯形

B.对角线互相垂直的平行四边形是正方形

C.对角线平分一组对角的平行四边形是菱形

D.对角线平分一组对角的梯形是直角梯形

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 、对角线相等的梯形是等腰梯形,故错误;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 、对角线互相垂直的平行四边形是菱形,故错误;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 、正确;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 、对角线平分一组对角的梯形是菱形,故错误;

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

6.(4分)如果存在一条线把一个图形分割成两个部分,使其中一个部分沿某个方向平移后能与另一个部分重合,那么我们把这个图形叫做平移重合图形.下列图形中,平移重合图形是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

A.平行四边形 B.等腰梯形 C.正六边形 D.圆

【解答】解:如图,平行四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,取 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的中点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape9

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 向右平移可以与四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 重合,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 平行四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是平移重合图形,

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

二、填空题:(本大题共12题,每题4分,满分48分)【请将结果直接填入答题纸的相应位置上】

7.(4分)计算: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>   <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

8.(4分)已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 3)的值是 1 

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 3 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为:1

9.(4分)已知正比例函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是常数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的图象经过第二、四象限,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值随着 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值增大而 减小 .(填“增大”或“减小”  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解:函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的图象经过第二、四象限,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值随 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值增大而减小,

故答案为:减小.

10.(4分)如果关于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 有两个相等的实数根,那么 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值是 4 

【解答】解:依题意,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 有两个相等的实数根,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为:4

11.(4分)如果从1234567891010个数中任意选取一个数,那么取到的数恰好是5的倍数的概率是  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 1234567891010个数中任意选取一个数,是5的倍数的有:510

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 取到的数恰好是5的倍数的概率是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

12.(4分)如果将抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 向上平移3个单位,那么所得新抛物线的表达式是  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

【解答】解:抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 向上平移3个单位得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

13.(4分)为了解某区六年级8400名学生中会游泳的学生人数,随机调查了其中400名学生,结果有150名学生会游泳,那么估计该区会游泳的六年级学生人数约为 3150名 

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (名 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

答:估计该区会游泳的六年级学生人数约为3150名.

故答案为:3150名.

14.(4分)《九章算术》中记载了一种测量井深的方法.如图所示,在井口 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 处立一根垂直于井口的木杆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,从木杆的顶端 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 观察井水水岸 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,视线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与井口的直径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,如果测得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 米,那么井深 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  7 米.

Shape10

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (米 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

答:井深 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 7米.

15.(4分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是平行四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的对角线,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么向量 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 用向量 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 表示为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

Shape11

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是平行四边形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

16.(4分)小明从家步行到学校需走的路程为1800米.图中的折线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 反映了小明从家步行到学校所走的路程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (米 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与时间 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (分钟)的函数关系,根据图象提供的信息,当小明从家出发去学校步行15分钟时,到学校还需步行 350 米.

Shape12

【解答】解:当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 代入,得:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

解得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 当小明从家出发去学校步行15分钟时,到学校还需步行350米,

故答案为:350

17.(4分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,联结 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> .如果将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 沿直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 翻折后,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的对应点为点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,那么点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 到直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的距离为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

Shape13

【解答】解:如图,过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape14

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是等边三角形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 到直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的距离为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

18.(4分)在矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在对角线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上,圆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的半径为2,如果圆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的各边都没有公共点,那么线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 长的取值范围是  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  

【解答】解:在矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

如图1,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 边相切于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

如图2,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 边相切于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 如果圆 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 与矩形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的各边都没有公共点,那么线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 长的取值范围是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape15

Shape16

三、解答题:(本大题共7题,满分78分)

19.(10分)计算: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解:原式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

20.(10分)解不等式组: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

解不等式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

解不等式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

故原不等式组的解集是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

21.(10分)如图,在直角梯形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求梯形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的面积;

2)联结 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的正切值.

Shape17

【解答】解:(1)过 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是矩形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 梯形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的面积 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2)过 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的正切值 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape18

22.(10分)去年某商店“十一黄金周”进行促销活动期间,前六天的总营业额为450万元,第七天的营业额是前六天总营业额的 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求该商店去年“十一黄金周”这七天的总营业额;

2)去年,该商店7月份的营业额为350万元,89月份营业额的月增长率相同,“十一黄金周”这七天的总营业额与9月份的营业额相等.求该商店去年89月份营业额的月增长率.

【解答】解:(1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (万元).

答:该商店去年“十一黄金周”这七天的总营业额为504万元.

2)设该商店去年89月份营业额的月增长率为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

依题意,得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

解得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (不合题意,舍去).

答:该商店去年89月份营业额的月增长率为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

23.(12分)已知:如图,在菱形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 分别在边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2)如果 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape19

【解答】1)证明: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是菱形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>


2)证明: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

24.(12分)在平面直角坐标系 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 轴、 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 轴分别交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> (如图).抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的长;

2)如果抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 经过线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上的另一点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,求这条抛物线的表达式;

3)如果抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的顶点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 位于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 内,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的取值范围.

Shape20

【解答】解:(1)针对于直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>


2)设点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 上,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

将点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 代入抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>


3 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 在抛物线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 抛物线的解析式为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 抛物线的顶点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 坐标为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 代入 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 顶点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 位于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 内,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

25.(14分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的外接圆, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线交边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

2)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 是等腰三角形时,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的大小;

3)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 时,求边 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的长.

Shape21

【解答】1)证明:连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape22

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>


2)解:如图2中,延长 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape23

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 重合,这种情形不存在.

综上所述, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的值为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>


3)如图3中,作 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> 的延长线于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

Shape24

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/118/" title="上海" class="c1" target="_blank">上海</a> <a href="/tags/263/" title="上海市" class="c1" target="_blank">上海市</a>



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