以椭圆
的左焦点
为圆心,过此椭圆右顶点
的圆截直线
所得的弦长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072f6d97940ca9141ce15b9d5fd484d5.png)
更新时间:2020-01-28 22:09:01
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