题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204717-11439.png)
⑴求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-92873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-12811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-45560.png)
(2)最小值为
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-46984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204719-28333.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204719-66805.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204719-55022.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204720-60485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204720-80344.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-45560.png)
⑵∵
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-92873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204720-81103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204720-56123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204720-10986.png)
∴当
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204721-18290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-46984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204721-41433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204718-43424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204719-28333.png)
核心考点
试题【已知函数⑴求的最小正周期及对称中心;⑵若,求的最大值和最小值.】;主要考察你对任意角三角函数的概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204713-15353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204713-90004.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204713-31744.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204606-96644.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204606-31496.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204558-45941.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204558-80828.gif)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204558-80828.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204558-80755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204546-79583.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204546-56403.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204546-57770.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204546-94291.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204547-17365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204547-88138.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204547-23120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204547-93398.gif)
求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204548-22802.gif)
写出函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204547-88138.gif)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204524-33390.gif)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822204524-85758.gif)
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