已知
为椭圆
上一点,若
的右焦点
的坐标为
,点
满足
,
,若
的最小值为
,则椭圆
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff659ee504aaef6573c49e83d773dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03af412eb49717ce665293f42bd33faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2372d236a663572ad4a6c0813dd6ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
2023·陕西安康·模拟预测 查看更多[2]
更新时间:2023-04-01 07:16:55
|
相似题推荐
单选题
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(0.65)
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【推荐1】已知动点
在椭圆
上,点
到定点
的距离记为
,到定直线
的距离记为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee9ce51f55008258322bbe19810f62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14436636ec6a7aec09cb63cecf6e970d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed30d19e5bd7e7e86a9405726f2b947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa285fb238cfd8ea5260d2c15dc69dc.png)
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【推荐2】椭圆
的焦点为
,点
在椭圆上,若
,则
的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff86e85e4d467091f2fa73018e23a1ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b5b3fa8e79f1523ba954d2c7936481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
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解题方法
【推荐1】已知椭圆C:
(a>b>0)的左、右焦点分别为F1,F2,左、右顶点分别为M,N,过F2的直线l交C于A,B两点(异于M、N),△AF1B的周长为
,且直线AM与AN的斜率之积为-
,则椭圆C的标准方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a57c6902e07ba05b5f275c02f2884f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321908c186925779d29985c8054f741a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
A.![]() | B.![]() |
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【推荐2】已知点M为椭圆
上一点,椭圆的长轴长为
,离心率
,左、右焦点分别为F1、F2,其中B(3,2),则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744fbb039e1f51ab2a05d95e2e7a7d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf74b605afa424fbc5159abae576a355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27526f8bfbb7603f7ddab6a13822c9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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