已知椭圆
的离心率
,则
的值等于__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3d6277c44ca2d27cdbee35410e2591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c01160616c3cc8accba299f4ae5373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2018-01-27 12:14:43
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【知识点】 根据离心率求椭圆的标准方程
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