1 . 函数
的定义域为
,若(1)
在
内是单调函数,(2)存在区间
,使得
在区间
上的值域是
,则称
为闭函数.若
为闭函数,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0195f699765021e2c6ea985e487971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a5ff66832ed844c01532a5cf603a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2018-12-20更新
|
191次组卷
|
3卷引用:江苏省南通市启东中学2017-2018学年高一下学期期初数学试题
2 . 已知
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca51ae21fc123f9494db9ac07dcf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e48c03364868eab375a26280008787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca51ae21fc123f9494db9ac07dcf9f.png)
A.7 | B.8 | C.9 | D.10 |
您最近一年使用:0次
2018-12-13更新
|
205次组卷
|
2卷引用:重庆市万州区南京中学2020-2021学年高一下学期入学考试数学试题