已知函数f(x)=cos^2x+2√3sinxcosx-sin^2x

问题描述:

已知函数f(x)=cos^2x+2√3sinxcosx-sin^2x
(1)求f(x)的最小正周期
(2)若x∈(-π/6,π/3)求f(x)的值域和单调增区间

y=cos2x+√3sin2x=2sin(2x+30)
t=pai
2x+π/6∈(-π/6,0)
(-1,0)
(-π/6,π/3)