题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033832-99838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033832-62739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033832-16390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-99176.png)
①函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-79918.png)
②函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-79918.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-88507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-66089.png)
④
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-31451.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033834-75834.png)
A.1 | B.2 | C.3 | D.4 |
答案
解析
试题分析:依题意知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033832-99838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033834-93913.png)
由函数的定义,函数的图象可能是以下情况:
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033834-12183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033834-22174.png)
① ②
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033835-85212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033835-87609.png)
③ ④
从以上情况可以看出:①④表示偶函数,②③表示奇函数,命题①②不正确;
由图①②可知
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-88507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033833-66089.png)
由于双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033834-93913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033835-18668.png)
故选
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033835-65899.png)
核心考点
试题【函数的定义域为,且其图象上任一点满足方程,给出以下四个命题:①函数是偶函数;②函数不可能是奇函数;③,;④,.其中真命题的个数是( )A.1B.2 C.3D.】;主要考察你对函数的单调性与最值等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033824-91850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033824-58316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033825-60859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033825-46829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033825-98360.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033818-83246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033818-38879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033819-44034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033819-36337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033819-15990.png)
A.(20,32) | B.(9,21) | C.(8,24) | D.(15,25) |
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033812-66991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033812-72751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033812-46056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033812-21909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033812-79541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033813-30509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033813-13380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033813-73959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033813-49335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033808-87129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033809-16276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033809-44987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033809-52753.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033805-50919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033805-26052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033805-51618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033805-75334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033806-36771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818033806-61689.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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