题目
题型:单选题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002334-42502.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
答案
解析
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002335-43908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002335-33803.png)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002334-87053.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002336-15700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002336-62563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002336-39436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002335-53148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002336-78560.png)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002335-71606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002336-28726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002337-23008.png)
核心考点
试题【下列函数是偶函数,且在上单调递增的是A.B.C.D.】;主要考察你对正弦函数的图象与性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002325-41788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002326-68321.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002326-44830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002326-68321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002317-35934.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002317-82776.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002317-41810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002317-82776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002308-28020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002308-56928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002308-30985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002308-32246.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002227-67816.png)
(1)求函数f (x)的最小正周期;
(2)在△ABC中,角A,B,C的对边分别是a,b,c,且满足
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002227-68770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002213-34165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002213-78054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002213-77545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002213-83058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002214-57350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830002214-91470.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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