名校
1 . 已知抛物线
的焦点为
,以该抛物线上三点
为切点的切线分别是
,直线
相交于点
与
分别相交于点
.记
的横坐标分别为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8801df26d9cb76bc289b64a3a26902e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a207ed5a6ca4f7ae2b94b3fa9dac411f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65183d238c9bc2be73770717d890683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-02-13更新
|
2170次组卷
|
4卷引用:江苏省泰州市2023届高三下学期第一次调研测试数学试题
名校
2 . 设
,且圆
与圆
外切,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ba6b6aa6c3f9faba6b03bc193a6e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04edd10816884ab1027af95984dfabd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87827d1eb857070fb694e4175b9f58bf.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知变量
,则
的最小值为__ .
![](https://img.xkw.com/dksih/QBM/2017/7/24/1736922152050688/1739372100059136/STEM/759a1a1b7fb744eea468da0e7ed71e24.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2017/7/24/1736922152050688/1739372100059136/STEM/622b84c6fc524cba853cccdacdf79268.png?resizew=198)
您最近一年使用:0次