f(x)= (√3/2)*sin2(ωx+α)-[1+cos2(ωx+α)]/2
=sin2(ωx+α)cosπ/6-cos2(ωx+α)sinπ/6-1/2
=sin[2(ωx+α-π/6)-1/2.
=sin(2ωx+2α-π/3). (0