1 . 已知函数
,其中
.
(1)当
时,求不等式
的解集;
(2)设函数
,当
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8303367eb009a18c7c669524710cf224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc42c1dcd2d8574feaacb9ac2829c078.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0d26d542bcfc982fbb594218c805f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54da8ff5c080e06d5795b0215d0ddd22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-02-12更新
|
128次组卷
|
3卷引用:安徽省马鞍山市2018届高三第一次(期末)教学质量检测数学(理)试题
2 . 选修4-5:不等式选讲
已知函数
.
(1)解不等式
;
(2)若存在实数
,使得
,求实数
的取值范围.
已知函数
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/70c72ecf4bf44b609975cc5d5ec36c24.png)
(1)解不等式
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/108cc8743997486b81b6733cdb2b8ddd.png)
(2)若存在实数
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/5db9083a5f6d486389e387a23bfe92a2.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/5343a8c4290848c69b81817786eccf44.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572386129387520/1572386135826432/STEM/810edf4f00ee41aa8135eb697a88b22a.png)
您最近一年使用:0次
2016-12-03更新
|
10次组卷
|
5卷引用:2017届安徽寿县一中高三上学期月考二数学(文)试卷
3 . 选修4-5:不等式选讲
设函数
,
.
(Ⅰ)求证:当
时,不等式
成立;
(Ⅱ)关于
的不等式
在
上恒成立,求实数
的最大值.
设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d900a35b77a754d43c5b040473ce67a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(Ⅰ)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dce2f4a82e105d294d5a95e4f6ad5d3b.png)
(Ⅱ)关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052886a19959810d09a8652f9691ce55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次