函数y=2cos(x+π/6)sin(π/3-x)-1=2cos(x+π/6)sin[ (π/2-((x+π/6)) ]-1=2cos(x+π/6) cos(x+π/6)-1=2cos²(x+π/6)-1= cos(2x+π/3),y=1/2sin2x+√3/2cos2x=sin(2x+π/3)=cos(π/2-2x-π/3)=cos(2x-π/6)=co...