名校
1 . 不论m为何实数,直线
恒过的定点坐标是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12929a516e69677a10f3581ad6b59c4b.png)
您最近一年使用:0次
2017-07-05更新
|
327次组卷
|
8卷引用:甘肃省天水市第一中学2020-2021学年高一上学期期末数学试题
2 . 已知直线
,圆
.
(1)求证:直线
过定点;
(2)当
为何值时,直线
被圆
截得的弦最短.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7e784f4171532de5a7bf4b3ddc4511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c90fd0958528ad8a8bc4945ac963b67.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
解题方法
3 . 已知
是以2为周期的偶函数,当
时,
,且在
内,关于
的方程
有四个根,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f79dd32feba300d8b435632faffdaf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次