名校
1 . 对圆
上任意一点
,
的取值与x,y无关,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a392337c91fd9fe51f670e2249dc4857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dad833494223f9de54601bf38aaae34.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-04更新
|
1593次组卷
|
5卷引用:福建省厦门第一中学2020-2021学年高二分班摸底练习数学试题
名校
2 . 已知函数
(
且
),若存在实数
,
(
),使得
的解集恰好为
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33873bf3b461ba9616ed7b05fab81547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4610754dff007c541aa4887d8705329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be35b4d8f52e8f440297683c3178e22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次