题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-27052.png)
(1)判断函数
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-97227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-51143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-26419.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-18260.png)
解析
试题分析:(1)首先求出
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-89125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-37549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154432-62553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-97227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154432-79948.png)
试题解析:
(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154432-31601.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154432-51550.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154432-55150.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154430-79265.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154433-30092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154433-49327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154433-81850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154433-54414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154433-88286.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154434-83158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154434-58851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154434-12996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154434-79879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154434-86781.png)
所以使
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-51143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-26419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154431-18260.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154421-33003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154422-19530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154422-48362.png)
A.c>b>a | B.b>c>a | C.a>c>b | D.a>b>c |
①.对于
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-25443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-91488.png)
②.已知
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-45394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-78175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154410-44482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-78175.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154409-45394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154410-44482.png)
③.若
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154410-17264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154410-54192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154410-58070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154411-59587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154411-48326.png)
④.
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154411-87627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154411-73721.png)
⑤.函数
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154412-15409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154412-83555.png)
其中,正确结论的序号为__________________.
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154401-44157.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154401-57795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154401-94882.png)
(2)若关于
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154404-45798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154404-80658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154404-21072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154404-90331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154357-43476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154357-62922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154357-49055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154357-49055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154358-95178.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154358-40585.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154358-63873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154353-57836.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154353-46670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154353-34397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820154353-26612.png)
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