1 . 已知函数
,当
时,
.
(1)求
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a646ded3861df41de70ad46a86858aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d6e81ff62a52037bc6d9bde7cd5cc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b25a72152ef4c73cc823392338c5884.png)
您最近一年使用:0次
2019-05-10更新
|
299次组卷
|
2卷引用:【市级联考】辽宁省丹东市2019届高三总复习质量测试(二)文科数学试题
2 . 设函数
.
(1)当
时,求函数
的定义域
;
(2)当
时,证明:
.
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/e840ee0a90f34c5887b8914547eef7ec.png)
(1)当
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/f90ecaaa1d0e48fda9613a31b8df0857.png)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/c3af873988dd4f9a8fe0bbf0da0e5d89.png)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/30ab5d3f316842cf99752776587f4244.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/d3486e27d48b412a9902e2393bbdf8ef.png)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572799304220672/1572799310356480/STEM/95f53ee615584499877535f87377ff8e.png)
您最近一年使用:0次