已知椭圆C:
过点
,点A为其左顶点,且AM的斜率为
,点N为椭圆上任意一点,则△AMN的面积的最大值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914075a4574c09bdb860d8f8f09a4e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3ccc38868099bc4d542e00e0b66685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
2024高三·全国·专题练习 查看更多[1]
(已下线)专题02 圆锥曲线中的求值问题(三大题型)
更新时间:2024-05-23 17:21:51
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【推荐1】已知椭圆
的焦点
,
,长轴长为6,设直线
交椭圆
于
,
两点,则线段
的中点坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b58d8b36df9790691c5c49dfe80789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1478115daf49999c51c122f8d31a65.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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适中
(0.65)
【推荐2】已知椭圆
的左焦点为
,直线
与
交于
,
两点,若
,则
的离心率是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0944c99f34ee41bea845303ed15a7d43.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐1】已知椭圆
,左、右焦点分别为
,
,设以线段
为直径的圆和此椭圆在第一象限和第三象限内的公共点分别为
,
,四边形
的面积为
,周长为
,若
,则该椭圆的离心率______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd4ab2712aa9c7040722e3f49ddeb53.png)
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【推荐2】已知椭圆
:
过点M(2,3),点A为其左顶点,且AM的斜率为
,则椭圆
的方程为_______ ;点N为椭圆上任意一点,则△AMN的面积的最大值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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