1 . 设
.求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dde0dead1eac1314a856006ed290471.png)
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2 . 函数
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e2c383f992582988694f093134d36a.png)
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3 . 设正数
、
满足
会且使得关于
的不等式
总有实数解.试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42908e5970778a25f84f920bc896e5b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da1c8f7af1168b6c05519be96bd304a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a38df5e6ff4bc77d7e035a1f28853fd.png)
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4 . 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)
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2018-12-20更新
|
191次组卷
|
3卷引用:数学奥林匹克高中训练题_209
5 . 函数
的值域是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202e8ac1686be900d1b922219e42f575.png)
您最近一年使用:0次
6 . 若
,且
,则二元函数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff4266fbd514b33b7bf556c539727e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005ca223175877e3496f83b0169aac97.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知
;
、
.
(1)求
的最大值与最小值;
(2)求所有实数
,使得对任意三个实数
、
、
,存在一个三角形具有边长
、
、
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636631cfed262ed594a6a1023b06a480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求所有实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35770a47ffcba6bf1d94eceabb416d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee0882f5f575d9e0ae7677efbd41b38.png)
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8 . 已知函数
.若
的定义域为
时,值域为
,则m、n、k应满足的条件是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da2104a700400167ff92682eb62d4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b605bf480dc152b67ebb9ebd96200b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4710862de149b8d1ff9be34376cbe869.png)
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9 . 给定
. 对
,定义
. 求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4070741392c7fe758cbed46408897d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209559aca6bf32705588b6a40e0b7320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480863e9e3765722238a208321d0ade3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
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10 . 设函数
的值域为
.则满足条件的函数
的个数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828a6d1060f83c3a853e2f5597489aac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6f56255cc5e39fdab460a6a4d7a87d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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