题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034642-20550.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034642-30681.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034643-66528.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034643-49609.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034643-61864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-79193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-57652.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-86268.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-74519.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-34736.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-34736.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-97555.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034642-30681.gif)
答案
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-22519.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034642-30681.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-79193.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-17906.gif)
因为函数
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-62864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034643-61864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-79193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034646-24781.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-22519.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034646-32291.gif)
(Ⅱ)由(Ⅰ)知:
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034646-28977.gif)
把函数
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034646-28977.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-74519.gif)
可得函数
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034646-32563.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034647-76001.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-34736.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034645-97555.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034647-74056.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034647-26945.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034647-76593.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034642-30681.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034644-79193.gif)
核心考点
试题【已知向量(为常数且),函数在上的最大值为.(Ⅰ)求实数的值;(Ⅱ)把函数的图象向右平移个单位,可得函数的图象,若在上为增函数,求的最大值.】;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/20190914/20190914034106-75623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034106-68361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034106-74044.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914034108-24071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033838-78975.gif)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033838-87229.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033839-97598.gif)
(Ⅱ)△ABC,角A,B,C所对边分别为a,b,c,且
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033839-23644.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033832-56824.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033832-82703.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033832-56546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033832-31868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033833-97839.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033806-25116.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033806-95520.gif)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033806-95520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190914/20190914033756-66593.gif)
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