题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-24087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-14521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-83395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-55523.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-93283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-76177.png)
答案
解析
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-24087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-14521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-83395.png)
所以有
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-41376.png)
平方得:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020033-57276.png)
又因为
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-55523.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020032-93283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020033-73818.png)
而
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020033-79580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020033-73941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020033-87946.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020034-67113.png)
点评:双曲线上的点满足
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020034-17223.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020022-77520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020022-81909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020023-40768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020023-96635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020023-11675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020023-56714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020024-42941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020024-19762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020024-42941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020023-40768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020018-29891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020018-85878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020019-16669.png)
A.0 | B.1 | C.0或1 | D.0或1或2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020010-57434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020010-80622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020011-82136.png)
则|
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020011-40666.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015959-14111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015959-21293.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020000-10990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020000-27320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020000-24746.png)
(1)求椭圆的方程;
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020000-17823.png)
(3)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020000-38123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020001-73160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026020001-47362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015959-14111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-48392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-82744.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-84298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-24364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-94644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-82744.png)
(1)求椭圆的方程;
(2)设椭圆的另一个焦点为
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-10726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-78584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015954-94083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015954-94083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-10726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015953-94644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015954-94083.png)
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