题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010551-68224.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-21030.png)
(2)函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-24342.png)
(3)设关于
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-87454.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-58577.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-64275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010553-88033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010553-25075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010553-72223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010553-53934.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-21030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-35886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-97113.png)
(2)函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-24342.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-10382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-93106.png)
解析
试题分析:(1)分类讨论去掉绝对值,即可求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-21030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010552-24342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-26075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010555-77408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010553-53934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010555-13323.png)
1)T=
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-35886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-97113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010555-40431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010555-48739.png)
(2)作函数
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-15333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-15333.png)
3)解:整理得:
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-26075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010555-77408.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-73219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-80899.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-98048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010556-87637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-83936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-49673.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-11775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-27812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-83936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010558-23768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010558-96274.png)
得
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010558-62489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010557-27812.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010558-81992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010558-17304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010559-76832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010559-69447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010559-65881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010559-65881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010559-41107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010554-93106.png)
核心考点
试题【已知:函数(1)求函数的周期T,与单调增区间.(2)函数的图象有几个公共交点.(3)设关于的函数的最小值为,试确定满足的的值,并对此时的值求的最小值.】;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/20190830/20190830010546-43125.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010546-30668.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010546-92959.png)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010546-92959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010538-50008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010538-53531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010539-72345.png)
A.周期函数 | B.增函数 | C.奇函数 | D.减函数 |
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010500-90190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010500-69426.png)
A.向左平行移动![]() | B.向右平行移动![]() |
C.向左平行移动![]() | D.向右平行移动![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010455-79875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010455-32381.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010455-84239.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010449-67569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010449-63832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010450-51958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010450-18448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010450-81910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190830/20190830010450-48238.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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