.已知
、
是椭圆
的两个焦点,
为椭圆上一点,且
,则
的面积 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a12168f1c8a054c642eedc9cf1c1dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e457eb8c28f5ab11a879c954e15ee87e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
11-12高二上·北京·期末 查看更多[3]
更新时间:2016-11-30 15:02:27
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【知识点】 椭圆中三角形(四边形)的面积
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【推荐2】若以椭圆上一点和椭圆的两个焦点为顶点的三角形面积的最大值为1,则该椭圆长轴长的最小值为____ .
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