已知抛物线
上的焦点
,点
在抛物线上,点
,则要使
的值最小的点
的坐标为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5545195ade2bda359e683715332e83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1294434b22cb5133043a2270ae1c43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44331dd46961efa418e3261d4014b2f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
更新时间:2020-11-26 22:01:10
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【知识点】 抛物线上的点到定点和焦点距离的和、差最值
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(0.85)
解题方法
【推荐1】已知点
,抛物线
的焦点为
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是抛物线上任意一点,则
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填空题-单空题
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较易
(0.85)
名校
解题方法
【推荐2】已知点
分别是抛物线
和圆
上的动点,
到
的准线的距离为
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3a20540c98c4f6aabb4d88f1d81228.png)
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