名校
1 . 已知抛物线
的焦点为
,准线与
轴的交点为
,点
在抛物线上,且
,o是坐标原点,则
=_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67e03bcd014d62bb3f8366b4b0bc0f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb796be8fee32ba36bb3c406cbaeb3a2.png)
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2018-01-19更新
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612次组卷
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3卷引用:青海省西宁市第四高级中学2017-2018学年高二上学期期末考试数学(文)试题