题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-51338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-56128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130912-50542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130912-87433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-56128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-82750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-41118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-65654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130914-60316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130914-26764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60076.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:根据题意,由于设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-51338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-56128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130912-50542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130912-87433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130911-56128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-82750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-41118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-65654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130914-60316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130914-26764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-60076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130914-26764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130913-82750.png)
点评:主要是考查了函数的性质的运用,属于基础题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130902-57260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130903-17207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130903-95494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130903-80807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130903-71361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130846-20133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130847-98995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130847-58634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130847-70851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130847-92278.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130828-78282.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130829-65572.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130829-71677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130829-67047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130829-50904.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130830-99122.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130830-14440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130829-50904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130821-77596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130821-11423.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130821-56022.png)
A.-1 | B.0 | C.-2 | D.2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130813-24883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130813-99626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017130813-89570.png)
A.6 | B.![]() | C.2或6 | D.-2或6 |
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