化簡函數f(x)=cos^2 x+根號3sin xcos x +1

熱心網友

f(x)=(cosx)^2+(√3)sinxcosx+1=[(1+cos2x)/2]+(√3/2)sin2x+1=(1/2)cos2x+(√3/2)sin2x+(3/2)=sin[2x+(π/6)]+(3/2)

熱心網友

O