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设动直线x=a与函数f(x)=2sin2(+x)和g(x)=cos2x的图象分别...
设动直线x=a与函数f(x)=2sin
2(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971007_ST/0.png)
+x)和g(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971007_ST/1.png)
cos2x的图象分别交于M、N两点,则|MN|的最大值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971007_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101230148687297128/SYS201311012301486872971007_ST/3.png)
C.2
D.3
考点分析:
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