名校
解题方法
1 . 已知函数
.
(1)画出
图象并直接写出单调区间;
(2)证明:
;
(3)不等式
,对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a18c676c5ef0a2291e17011c9af2848.png)
(1)画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad79f0669537e4e5c247fc842f1599c.png)
(3)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ec0b78a25a36ba39905f606dccc1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98927330583cfd48b18e42f9a5ff77dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2 .
.
求:(1)写出
的解析式,并作出
的图像;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/f625ae14-5827-48d5-82ad-6c8e1c57e4ef.png?resizew=200)
(2)写出
的单调递增区间,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0b50c114230395685a657ba42cc397.png)
求:(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/f625ae14-5827-48d5-82ad-6c8e1c57e4ef.png?resizew=200)
(2)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
您最近一年使用:0次
名校
3 . 已知函数
是定义在
上的偶函数,且
时,
.
(1)求
时
的解析式;
(2)在如图坐标系中作出函数
的大致图象;写出函数
的单调区间并指出函数在这些区间上的单调性(不需要证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dceed2e7a0a44f06934d0262b6bbfac1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842c2ef9893cc67e621e272fa0be9926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在如图坐标系中作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/bd5c8ef0-e125-44e9-a709-9af8256294dd.png?resizew=268)
您最近一年使用:0次