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函数y=sin2x的图象经过适当变换可以得到y=cos2x图象,则这种变换可以是...
函数y=sin2x的图象经过适当变换可以得到y=cos2x图象,则这种变换可以是( )
A.沿x轴向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225157519573297/SYS201311012251575195732007_ST/0.png)
个单位
B.沿x轴向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225157519573297/SYS201311012251575195732007_ST/1.png)
个单位
C.沿x轴向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225157519573297/SYS201311012251575195732007_ST/2.png)
个单位
D.沿x轴向右平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225157519573297/SYS201311012251575195732007_ST/3.png)
个单位
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