抛物线
的焦点到圆
上点的距离的最大值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea18529955ae6dfdf7b9198c17472f29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe27e6b29a9e48ddfbbe79206ffa36.png)
2020高三·全国·专题练习 查看更多[1]
(已下线)考点44 抛物线(练习)-2021年高考数学复习一轮复习笔记
更新时间:2020-09-02 11:00:15
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【知识点】 抛物线定义的理解
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【推荐1】若抛物线
上的点
到其焦点的距离为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132191091cdeef5a3307e88bc5d72487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
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【推荐2】已知抛物线
的焦点为
,点
在抛物线
上,点
在抛物线
的准线
上,若
,且
,则
到
的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c2cd1a320139bb46d1d26f87d7c8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717a112d118cf1891a59535ea7d17414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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