解题方法
1 . 椭圆
的焦点为
,点
在椭圆上,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914075a4574c09bdb860d8f8f09a4e7a.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/3198e6ef0ba111a778c1e30bccf327ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c995c8fe932efcf10b27b655fb5efae7.png)
A.3 | B.4 | C.5 | D.6 |
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2020-01-09更新
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211次组卷
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2卷引用:宁夏固原市隆德县2020-2021学年高二上学期期末考试数学(文)试题