y=sin2x-sin(2x-π/3)=2cos(π/3)sin2x-[sin2xcos(π/3)-cos2xsin(π/3)]=sin2xcos(π/3)+cos2xsin(π/3)=sin(2x+π/3)所以当2x+π/3∈[-π/2+2kπ,π/2+2kπ],即x∈[-5π/12+kπ,π/12+kπ],k∈Z时,函数在其每一个...