椭圆
的四个顶点所围成的四边形的面积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e78f1a9cc4dedc05c175ab99b288b9f.png)
更新时间:2023-10-10 21:59:40
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【推荐1】已知椭圆
的焦点为
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【推荐2】已知椭圆
的右顶点为
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等于__________ .
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【推荐1】椭圆
的左焦点为
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的周长最大时,
的面积是______ .
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【推荐2】已知椭圆
的左、右焦点分别为F1 ,F2 ,点P是椭圆上的一点,若PF1 ⊥PF2 ,则△F1PF2的面积是___________ .
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