解题方法
1 . 设O为坐标原点,抛物线
的焦点为F,准线为l,A是C上第一象限的点,
的垂直平分线与l交于点M,若
的面积为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb466d900ec0e69b0a8d067972b05739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2ce6d23fb52cc513580a8f0e6760c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
A.抛物线C的焦点坐标为![]() | B.抛物线C的准线方程为![]() |
C.直线![]() | D.![]() ![]() |
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