函数y=sinxcos(x+π4)+cosxsin(x+π4)的最小正周期T=_.

问题描述:

函数y=sinxcos(x+

π
4
)+cosxsin(x+
π
4
)的最小正周期T=______.

y=sinxcos(x+

π
4
)+cosxsin(x+
π
4
)=sin(x+x+
π
4
)=sin(2x+
π
4

对于y=sin(2x+
π
4
),最小正周期T=
2

故答案为:π