名校
解题方法
1 . 设
为抛物线
的焦点,
为该抛物线上不同的三点,若点
是
的重心,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8377cc802ec79acb5b9f658f3a52c3.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8377cc802ec79acb5b9f658f3a52c3.png)
您最近一年使用:0次
名校
2 . 已知过抛物线
焦点
的直线
交抛物线于
两点(点
在第一象限),若
,则直线
的方程为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/d6958eeb-7d3d-4067-9590-2c0db533c192.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f29f7a04e4cfdcaedbb45e222ea566c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80156fb43e5f33534186b96e657fd364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdfcc3849756cd7bea1134bc3431a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/24/d6958eeb-7d3d-4067-9590-2c0db533c192.png?resizew=177)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2017-08-01更新
|
529次组卷
|
4卷引用:辽宁省部分高中2021-2022学年高三上学期期中评测数学试题