题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083149-69908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083149-84544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083149-88835.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-21911.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-14869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-21911.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-66477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-23250.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-92057.png)
解析
试题分析:(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-78405.png)
由题意,
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-16343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-32525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-84868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-13542.png)
从而
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-90828.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-94999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083153-82412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-66477.png)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083152-90828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083153-33695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083153-76662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083153-59345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-21911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083154-81267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-14869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083150-21911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-23250.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083151-92057.png)
点评:要考察三角函数性质先要将其整理为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083154-91336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083154-28104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083154-71020.png)
核心考点
试题【已知函数,且函数的图象相邻两条对称轴之间的距离为.(Ⅰ)求的对称中心;(Ⅱ)当时,求的单调增区间.】;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/20190910/20190910083123-68136.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083124-33863.png)
(2)在
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083124-67550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083124-11107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-89606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-89606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-89606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-60033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-86227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083124-67550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-46488.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083125-94876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083024-63972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083025-40799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083025-29914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083025-14593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083025-63105.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083009-25097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083009-73235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083009-36667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083009-89736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910083009-17169.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082948-51204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082948-24324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-85580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-35093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-35093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-63800.png)
(Ⅰ)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-48560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082950-14703.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082949-63800.png)
(Ⅱ)记
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082950-46095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082950-74163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082950-41129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082951-51666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082951-36476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082940-78869.png)
P1:最大值为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082940-42867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082940-81663.png)
P3:单调递增区间为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082940-76933.png)
P4:图象的对称中心为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910082940-57571.png)
A.1 个 | B.2个 | C.3个 | D.4个 |
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