名校
解题方法
1 . 过抛物线
:
的焦点
作两条互相垂直的弦
,
,设
为抛物线上的一动点,
,若
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243e699ef05dc31d5f577bef2a22801e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ffbf3992d4bbf30ab1cf01f8c45bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff21811ea84135ab28112ae687268f3.png)
A.2 | B.3 | C.4 | D.5 |
您最近一年使用:0次
2021-12-25更新
|
1048次组卷
|
5卷引用:浙江省平湖市当湖高级中学2022-2023学年高二上学期12月阶段测试数学试题
2 . 已知点
,抛物线
的焦点为
,点
在抛物线上,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96ef7e9efc2681546f2320b108a1987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/e42f7f55a1b8dcc5109febc8aa018bfc.png)
您最近一年使用:0次