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1 . 已知椭圆C:
的右焦点为F,直线l:
,点
,线段AF交椭圆C于点B,若
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a30262f17d1e521b48d773da22ebf452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc72c1c27a947fed0e44f8ff845c0979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a174d8c23ca3fe755123d6c5458d4175.png)
A.![]() | B.2 |
C.![]() | D.3 |
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2018-11-12更新
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6卷引用:黑龙江省哈尔滨市第六中学2019-2020学年高二上学期10月份阶段性总结数学(理)试题