函数f(x)=sin(x-派/4)+cos(x-3/4派),求f(x)的最小正周期和最小值
问题描述:
函数f(x)=sin(x-派/4)+cos(x-3/4派),求f(x)的最小正周期和最小值
答
f(x)=sin(x-π/4)+cos(π/2-(x-π/4))=2sin(x-π/4)
最小正周期2π 最小值-2