题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-45570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-28914.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-74629.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-47380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-71745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-16983.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-44314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-27801.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-19919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034536-11031.png)
因
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034536-37718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-74629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-44314.png)
(Ⅱ)因
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034536-78636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034536-44956.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-31810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-69620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-28914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-62755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-31810.png)
依题意知
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-86300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034537-31810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034538-82190.png)
于是
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034538-90842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034538-79340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-16983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-27801.png)
【考点定位】本题以三角函数的化简求值为主线,三角函数的性质为考查目的一道综合题,考查学生分析问题解决问题的能力.由正弦函数的单调性结合条件可列
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034538-90842.png)
核心考点
试题【设其中(Ⅰ)求函数的值域;(Ⅱ)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/20190911/20190911034527-80954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034528-67236.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-73693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-42486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-25142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-79498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034509-31660.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-27136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-44811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-49307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034457-98498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034457-15664.png)
A.向左平移![]() | B.向右平移![]() |
C.向左平移![]() | D.向右平移![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034453-21480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034453-39777.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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