已知定义在R上的函数f(x)=asinωx+bcosωx(ω>0,a>0,b>0)周期为
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402019_ST/0.png)
.
(1)写出f(x)的表达式,并作出f(x)在[0,π]上的简图;
(2)写出函数f(x)的单调递增区间;
(3)说明f(x)的图象如何由函数y=sinx的图象经过变换得到.
考点分析:
相关试题推荐
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402018_ST/0.png)
,1),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402018_ST/1.png)
,cosα),且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402018_ST/2.png)
∥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402018_ST/3.png)
,求
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402018_ST/4.png)
的值.
查看答案
从1,2,3,4,5五个数字中任意取3个出来组成一个没有重复数字的三位数.
求(1)这个三位数是奇数的概率;
(2)这个三位数大于300的概率.
查看答案
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/1.png)
,(1)求
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/2.png)
与
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/3.png)
的夹角θ;(2)若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/4.png)
,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/5.png)
∥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/6.png)
,试求
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402016_ST/7.png)
.
查看答案
若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402015_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402015_ST/1.png)
,且
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402015_ST/2.png)
,tan(α-β)=-3,求下列各值.
(1)
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225804635240233/SYS201311012258046352402015_ST/3.png)
(2)tanβ
查看答案