（1）f(x)=sin²wx+(根号3/2)sin2wx-(1/2)=1/2(1-cos2wx)+√3/2sin2wx-1/2=√3/2sin2wx-1/2cos2wx=sin(2wx-π/6)∵f(x)的最小正周期为2π ∴2π/(2w)=2π∴w=1/2∴f(x)=sin(x-π/6)由2kπ-π/2≤x-π/6≤2kπ+π...