问题 选择题
函数y=cos(4x+
π
3
)
图象的两条相邻对称轴间的距离为(  )
A.
π
8
B.
π
4
C.
π
2
D.π
答案

对于y=cos(4x+

π
3
),T=
4
=
π
2

∴两条相邻对称轴间的距离为

T
2
=
π
4

故选B.

阅读理解

阅读理解

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