已知函数f(x)=4sinxcos(x+派/6)+1.求f(x)最小正周期.
问题描述:
已知函数f(x)=4sinxcos(x+派/6)+1.求f(x)最小正周期.
答
f(x)=4sinxcos(x+π/6)+1
=2[sin(2x+π/6)+sin(-π/6)]+1 积化和差公式
=2sin(2x+π/6)
T=2π/2=π