1 . 已知实数
、
满足
.试求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b427e2ad04a8310e64ad590c4b811b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad4fa278af42d3ef21266f4c8d3ded.png)
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2 . 设函数
,当
时,
恒成立.则
的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f4b71b9376895a7297629ae6934ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb433b1b78dbf82889ae82a689b8b46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64237c5328d1c28b1a5717f5512ffd35.png)
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3 . 若函数
的值域为
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b18b227d7465acdadb69b9c5904eda2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知定义域在
上的函数
满足:对
,有
.则函数
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa5abd1bd30045669bb6245db18bdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697c1fedc029805bee842de0448fa862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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5 . 定义区间![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
的“长度”等于
.若定义域非空的函数
的定义域和值域的长度相等.则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f638f57e9566b938633785bdd79c864c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa1e00ee084e015955c9a1a8c5b4108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
6 . 函数
的值域是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f5bc918cdc2432dfd6cf467eb92053.png)
您最近一年使用:0次
7 . 已知
,至少有一个正数b,使得
的定义域和值域相同则满足条件的实数a的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149ac5ebffd860a1c03f37fbb11e81a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
8 . 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:数学奥林匹克高中训练题_209
9 . 函数
的值域为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2b82d38d5c5e5a767ab5fb61311dc3.png)
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10 . 求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293fb69242e290eff609aad508cdda86.png)
您最近一年使用:0次