已知函数y=sin(x+
|
∵y=sin(x+
)cos(x+π 6
)=π 6
sin(2x+1 2
)π 3
∴T=
=π,排除A,B2π 2
令x=
代入y=π 6
sin(2x+1 2
)得y=π 3
,故x=3 4
不是对称轴,排除C.π 6
故选D.
已知函数y=sin(x+
|
∵y=sin(x+
)cos(x+π 6
)=π 6
sin(2x+1 2
)π 3
∴T=
=π,排除A,B2π 2
令x=
代入y=π 6
sin(2x+1 2
)得y=π 3
,故x=3 4
不是对称轴,排除C.π 6
故选D.