y=sin^2 2X+√3sinxcosx-1=(1-cos2x)/2+√3/2*(2sinxcosx)-1
=√3/2*sin2x-1/2*cos2x-1/2
=sin2xcosπ/6-cos2xsinπ/6-1/2
=sin(2x-π/6)-1/2
-1
y=sin^2 2X+√3sinxcosx-1=(1-cos2x)/2+√3/2*(2sinxcosx)-1
=√3/2*sin2x-1/2*cos2x-1/2
=sin2xcosπ/6-cos2xsinπ/6-1/2
=sin(2x-π/6)-1/2
-1