题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144300-12522.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144300-67219.png)
(Ⅱ) 求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144300-67219.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144300-82596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144301-89131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144301-53949.png)
解析
试题分析:(Ⅰ)由
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144301-22463.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144301-17313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144301-16757.png)
试题解析:
(I)因为
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-29614.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-72981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-91072.png)
所以函数的定义域为
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-31424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-20286.png)
(II)因为
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144303-68407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144303-22537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144303-10192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144303-28850.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144304-43165.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144304-76940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-91072.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144304-65324.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144304-56121.png)
又注意到
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144304-76912.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144300-67219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144305-39695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144302-91072.png)
核心考点
试题【已知函数.(Ⅰ)求函数的定义域;(Ⅱ) 求函数的单调递增区间.】;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/20190822/20190822144237-19669.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144238-78414.png)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144238-55186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144223-32633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144224-80914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144224-94160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144224-71918.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144225-77226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144225-61580.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144225-96201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144225-13684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144149-23787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144150-94394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144150-56497.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144139-25484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144139-57666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144139-64890.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144140-45334.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144140-60083.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144140-91080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144140-60391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-94137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-51569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-14105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-60504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-93913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-51569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144131-46227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144131-11324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144131-18279.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144131-67108.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144131-50612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-62343.png)
(Ⅱ)分别过
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-81437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-14105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-81666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-58258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-87222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144132-20683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144133-78905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144133-81636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822144130-51569.png)
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