解题方法
1 . 如图,
,
分别是椭圆的左、右焦点,点P是以
为直径的圆与椭圆在第一象限内的交点,延长
与椭圆交于点Q,若
,则直线
的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac81a2e562e05bb08d6fb0f7c7a71fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/a43a9492-1755-44d1-a43d-af59f716132d.png?resizew=173)
A.![]() | B.2 | C.![]() | D.3 |
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A.![]() | B.2 | C.![]() | D.3 |