16-17高二上·上海浦东新·阶段练习
名校
解题方法
1 . 如图,已知点
在焦点为
的椭圆上运动,则与
的边
相切,且与边
的延长线相切的圆的圆心
一定在( )
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411753177128960/2411828228489216/STEM/8023af0686824f5ba9cd52df52b16fc4.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb45ae7d84a6e0272c83413056f14810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/3/3/2411753177128960/2411828228489216/STEM/8023af0686824f5ba9cd52df52b16fc4.png?resizew=135)
A.一条直线上 | B.一个圆上 | C.一个椭圆上 | D.一条抛物线上 |
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