名校
解题方法
1 . 对任意
,不等式
恒成立,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8272e1e42c8a796ce42ad875f4d508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-07-09更新
|
463次组卷
|
3卷引用:重庆市十八中两江实验中学2019-2020学年高一上学期10月月考数学试题
名校
2 . 已知
,函数
,若存在
,使得
,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2ee76921920963512719ff2bac1183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd691932900ee5c58d0eb8007463e0ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 已知函数
.若存在
,使得不等式
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ba4dfdca2cafee9615d2c0d6842bd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c62b3c44e262862c5d29c0d28ae17c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
名校
4 . 设函数
.
(1)当
时,求不等式
的解集;
(2)对
,都有不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2747c1d5f69039ecc5568a8887d24648.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/904caee5239c84d0396fb87cbc8e8043.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8e71378a3c5818b9e3e41ef7a4ac1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f080a0ac55d5392e9a702199352dca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
5 . 设函数
,
.
(1)若不等式
的解集为
,
,
,求
,
的值;
(2)若
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1401f15d830782ec64544ad011214a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602bf58c4d66fe3884bd922fb4a89694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e97e8123511f09ba98137beb0d941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1b0b4297c4d8334a746e14e588e605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8f386c45b8fed55990673644a0b23f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db355328fdb51b10764c8606904cb741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2019-06-21更新
|
442次组卷
|
4卷引用:重庆市2019届普通高等学校招生全国统一考试5月调研测试(三调)文科数学试题