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函数y=cos(2x+)的图象的一条对称轴方程是( ) A.x=- B.x=- ...
函数y=cos(2x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123648884784731/SYS201310251236488847847002_ST/0.png)
)的图象的一条对称轴方程是( )
A.x=-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123648884784731/SYS201310251236488847847002_ST/1.png)
B.x=-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123648884784731/SYS201310251236488847847002_ST/2.png)
C.x=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123648884784731/SYS201310251236488847847002_ST/3.png)
D.x=π
考点分析:
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