已知椭圆
的左顶点为
,上顶点为
为坐标原点,椭圆上的点
分别在第一、二象限内,若
与
的面积相等,且
,则
的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d599697eff78ffdff6768af430be33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7da78d43768cbb6fb9cd95b16efd91e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c29e963e1871b415c086bc600d16bd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f8a33ab7b6d46fc6aa88c370e54983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e5eac0e384eeb185f5c6125556374ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
更新时间:2023-05-08 17:09:28
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【知识点】 求椭圆的离心率或离心率的取值范围
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适中
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【推荐1】已知椭圆
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名校
【推荐2】设
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