题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190618-82857.png)
A
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-21020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-62587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-67467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-88908.png)
答案
解析
本题考察函数的单调性与奇偶性
由函数的奇偶性定义易得
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-21020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-67467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-88908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-62587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-88908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-86574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-56813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-37021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-67467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-87892.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190618-82857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-37021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-21020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190620-77256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190621-20565.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190621-51753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190621-56873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190619-21020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190618-82857.png)
故选择A
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190612-56914.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190612-67535.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190612-31248.gif)
⑴若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190613-95160.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190613-11701.gif)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190614-51694.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190614-13338.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190614-76605.gif)
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190609-25372.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190610-18951.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190610-41129.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190610-64632.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190610-87593.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190607-78518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190607-53230.png)
A.(![]() | B.(![]() | C.(![]() ![]() | D.(0,![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190604-50187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190605-77717.png)
A.(0,![]() | B.(-1,0)![]() ![]() |
C.(2,![]() | D.(-1,0) |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190602-81569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819190602-38365.png)
A.(![]() | B. (10a,1![]() | C.(![]() | D.(a2,2b) |
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