已知椭圆C:
的右焦点为F,过F的直线与C交于A、B两点,其中点A在x轴上方且
,则B点的横坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade0c328cc3442c26e5bf33d9134c071.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2024·广西桂林·三模 查看更多[2]
更新时间:2024-05-08 16:20:28
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【推荐1】设
,
分别是椭圆
的左,右焦点,P为椭圆上一点,M是线段
的中点,若
(O为坐标原点),则
的值是( )
![](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/5e78f1a9cc4dedc05c175ab99b288b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
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A.6 | B.5 | C.4 | D.3 |
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解题方法
【推荐2】已知椭圆
,
,
为两个焦点,
为原点,
为椭圆上一点,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f4b244b3b0799cfb1994364036eb1.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8de17bc319856fc4ee025fb3057659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48e563197a5b062ff25150a785e20f8.png)
A.![]() | B.![]() | C.![]() | D.1 |
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【推荐1】已知抛物线
,过其焦点
的直线
与抛物线分别交于
、
两点(点
在第一象限),且
则直线
的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a27b164fa4782b89eaea76ebec6247.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知椭圆
的上顶点为A,右焦点为F,直线AF与C交于点B.若
,则C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8e7fce9956e1e349470e30af7ce279.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次