√3cos^2x+sinxcosx-√3/2
=√3/2(1+cos2x)+1/2*2sinxcosx-√3/2
=√3/2cos2x+1/2sin2x
=sinπ/ 3cos2x+cosπ/ 3sin2x
=sin(2x+ π /3 )谢谢，我可以加你Q吗，你Q号是多少