1 . 已知函数
.
(1)求函数
的定义域;
(2)判断函数
的奇偶性,并说明理由;
(3)若函数
,求函数
的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddef8ad0cc9e4ad5ff0dcd4d2c8ccfd.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbef3e990f4789a2addc1fedefb4150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
解题方法
2 . 设
是实数,
,
(1)已知
是奇函数,求
;
(2)用定义证明:对于任意
在
上为增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa12fe1a26b6d1d5a667d0eea942284a.png)
(1)已知
![](https://img.xkw.com/dksih/QBM/2015/11/10/1572284924084224/1572284929990656/STEM/ca4a4342dae2467cbc85016552d609b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)用定义证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598b2b5e4be479f37038ade0bf22e2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
您最近一年使用:0次