f(x)=2cosx(sinxcos60+cosxsinx)-√3(sinx)^2+sinxcosx
=cosxsinx+√3cos^2x-√3sin^2x+sinxcosx
=sin2x+√3cos2x
=2sin(2x+60)
最小正周期π 最值2 -2
增区间(-5π/12+kπ,π/12+kπ)
f(x)=2cosx(sinxcos60+cosxsinx)-√3(sinx)^2+sinxcosx
=cosxsinx+√3cos^2x-√3sin^2x+sinxcosx
=sin2x+√3cos2x
=2sin(2x+60)
最小正周期π 最值2 -2
增区间(-5π/12+kπ,π/12+kπ)