已知椭圆
的顶点是
,
,若过其焦点
的直线
与椭圆交于
两点,并与
轴交于点
(
异于点
),直线
与
交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce153ae2da776512efe26db645f3945.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2347bec7975dab2b8bce2fd19b1237d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce153ae2da776512efe26db645f3945.png)
更新时间:2020-12-05 20:41:35
|
【知识点】 椭圆中的定值问题
相似题推荐
填空题-单空题
|
较难
(0.4)
解题方法
【推荐1】已知
,
,
为曲线
的左、右焦点,点
为曲线
与曲线
在第一象限的交点,直线
为曲线
在点P处的切线,若三角形
的内心为点M,直线
与直线
交于N点,则点
横坐标之差为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce64fa0d35183e9cea4b93bef8b53fe1.png)
![](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/4dfd67a867ed71a09f95446d45a26b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff52816bf2fc5d975a368e8856898f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8a7029669bf1774a24f3ef6273ca88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8ad9e94d07405a6be585f81a0d623b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
您最近一年使用:0次
填空题-单空题
|
较难
(0.4)
名校
解题方法
【推荐2】已知直线
与椭圆C:
交于A,B两点,弦BC平行y轴,交x轴于D,AD的延长线交椭圆于E,下列说法中正确的命题有______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/dc2fd1e2-f2c3-4a70-89a9-6ae0a29d92f5.png?resizew=196)
①椭圆C的离心率为:
; ②
;
③
; ④以AE为直径的圆过点B.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8481f8c148f7ee6e0ee000d38ea62ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/dc2fd1e2-f2c3-4a70-89a9-6ae0a29d92f5.png?resizew=196)
①椭圆C的离心率为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5020a41ba83aa373e56279a8da9fb82f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68736e6fe6530d1b4bd4e8e9885de2a.png)
您最近一年使用:0次