过抛物线C:
的焦点F,且斜率为
的直线交C于点M(在x轴上方),l为C的准线,点N在l上且
,则点M到直线NF的距离为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33a3f384acb53b5a21521a77ac0b1f7.png)
21-22高二下·陕西西安·阶段练习 查看更多[3]
陕西省西安市西北工业大学附属中学2021-2022学年高二下学期4月月考文科数学试题(已下线)专题16 圆锥曲线焦点弦 微点3 圆锥曲线焦点弦长公式及其应用北师大版(2019) 选修第一册 数学奇书 学业评价(二十) 抛物线的标准方程及性质的应用
更新时间:2022-04-07 08:12:51
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【推荐1】若双曲线
的左焦点在抛物线
的准线上,则
的值为______ .
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【推荐2】抛物线C与抛物线
关于
轴对称,则抛物线C的准线方程是___________ .
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【推荐1】已知抛物线
的焦点为
,过点
作
轴的垂线交抛物线
于点A,且满足
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于另一点
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的纵坐标为________ .
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【推荐2】已知O为坐标原点,过抛物线
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