题目
题型:单选题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-62177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-36171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-83537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-56609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-35978.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-56543.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-82096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-83624.png)
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-18984.png)
其中正确的命题个数为( )
A.1 | B.2 | C.3 | D.4 |
答案
解析
试题分析:令
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-10815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-36171.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-43132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041445-12828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041445-51088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041445-27070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-83537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041445-78764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-82096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041446-22939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-83624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-56609.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041443-35978.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-56543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041446-52146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041446-62379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041446-36482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041446-76788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041442-85983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041445-12828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041447-55386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041444-18984.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041437-78130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041438-95646.png)
(1)讨论
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041438-78427.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041438-80240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041438-78427.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041439-35939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041439-45540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041439-68145.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041429-21393.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041429-37748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041429-25853.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041429-36622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-23118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-95995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-40594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-48369.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-93842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041430-89871.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041431-12976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041424-32717.png)
A.奇函数且在![]() | B.奇函数且在![]() |
C.偶函数且在![]() | D.偶函数且在![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041420-48435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041420-62735.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041421-82162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041421-30127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818041421-69757.png)
A.![]() | B.![]() |
C.![]() | D.不能确定![]() ![]() |
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