1 . 过抛物线
焦点的直线交抛物线于
两点,若
,则
的中点
到y轴的距离等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661bd8d4d82205bd311e7349ae91f602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80156fb43e5f33534186b96e657fd364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4dc18e3f0bb85cddbf425ead51035a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2019-03-08更新
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526次组卷
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3卷引用:【区级联考】广东省深圳市宝安区2018-2019学年高二第一学期期末调研理科数学试题