题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-77649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-37255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-85637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192521-52843.png)
①函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-37255.png)
②函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-37255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192521-79692.png)
③函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-37255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192521-60825.png)
其中,真命题的个数是( )
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192520-85637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192522-21619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192522-81968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192521-52843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-57041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-90457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-90457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192521-79692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-60860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-31262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192523-63818.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192524-94470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192524-55792.png)
点评:函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192524-84187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192524-26913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192524-56202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192525-36001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192525-82910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192525-69576.png)
核心考点
试题【定义在上的函数满足:,且函数为奇函数。给出以下3个命题:①函数的周期是6;②函数的图像关于点对称;③函数的图像关于轴对称。其中,真命题的个数是( )A.B.C】;主要考察你对函数的相关概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192512-57184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192513-42564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192513-33788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192512-57184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192513-55769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192513-79944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192514-57000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192514-99208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192455-76599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192455-52399.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192456-71817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192456-61179.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192456-98584.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192456-47379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192457-33212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192457-53439.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192446-82751.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192431-29302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192431-72713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192432-30327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192432-84274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192432-18421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192432-34912.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192351-89857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192351-25669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192352-61477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204192352-82654.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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