解答题-证明题 适中0.64 引用3 组卷761
已知椭圆
左、右焦点分别为F1、F2,点
,点F2在线段PF1的中垂线上.
(1)求椭圆C的方程;
(2)设直线
与椭圆C交于M、N两点,直线F2M与F2N的倾斜角分别为
,且
,求证:直线
过定点,并求该定点的坐标.
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/feef9ef6d88342d8a41aca7dd7a6428f.png)
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/ea6cc896f4ac4ad6b7e46efa5d161b45.png)
(1)求椭圆C的方程;
(2)设直线
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/135746207f7e4b46b97c2d76642b4218.png)
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/df72f957235644afbca0f5c5568f8db3.png)
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/8803442a916f44a3ab2063ae19713768.png)
![](https://img.xkw.com/dksih/QBM/2010/8/6/1576721184817152/1576721252155392/STEM/e96e0ca3dc0249bca56e60d4210b5aac.png)
2010·辽宁·一模
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