y=sin(x+π/3)sin(x+π/2)
=(sinx+√3cosx)cosx/2
=[sinxcosx+√3(cosx)^2]/2
=[sin2x/2+√3(cos2x+1)/2]/2
=(sin2x+√3cos2x+√3)/4
=2sin(2x+.
划到这边可以了吧?
周期是π
y=sin(x+π/3)sin(x+π/2)
=(sinx+√3cosx)cosx/2
=[sinxcosx+√3(cosx)^2]/2
=[sin2x/2+√3(cos2x+1)/2]/2
=(sin2x+√3cos2x+√3)/4
=2sin(2x+.
划到这边可以了吧?
周期是π