题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041024-43955.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041024-47833.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041025-30338.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041025-79946.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041025-88027.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041025-22873.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041026-60966.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041026-96358.gif)
解析
核心考点
举一反三
已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041016-35931.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041016-57360.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-30433.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-86518.gif)
(1)求椭圆方程;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-23629.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-22651.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-84336.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-76748.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-65473.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-65298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-36555.gif)
(3)在(2)的条件下,试问
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041017-82713.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041018-40225.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041018-75065.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041018-55081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041018-10580.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041018-75065.gif)
已知双曲线C:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040957-36507.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-51551.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-90175.gif)
(1)求双曲线C的方程;
(2)设经过焦点
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-82669.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-61241.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-17344.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-39849.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-61241.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-95167.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-61773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-31649.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041000-72747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041000-39734.gif)
(3)设(2)中直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040958-61241.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-95167.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-61773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026041000-91939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040959-61773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040952-80983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040952-77889.png)
A.![]() ![]() | B.2 | C.3 | D.6 |
已知椭
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040947-91645.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040947-32044.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040947-75880.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040947-93400.gif)
(1)求椭圆C的方程;
(2)求椭圆以M(-1,2)为中点的弦所在直线的方程.
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040941-66282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040942-93000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040942-45352.png)
A.4,8 | B.2,6 | C.6,8 | D.8,12 |
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