f(X )=m^2+m*n-2=sin^2x+1+ 根号3sinxcosx+1/2=sin^2x+ 根号3sinxcosx+3/2
=1/2(2sin^2x-1)+ 根号3sinxcosx+2=根号3/2sin2x-1/2cos2x+2=sin(2x-60)+2
1
f(X )=m^2+m*n-2=sin^2x+1+ 根号3sinxcosx+1/2=sin^2x+ 根号3sinxcosx+3/2
=1/2(2sin^2x-1)+ 根号3sinxcosx+2=根号3/2sin2x-1/2cos2x+2=sin(2x-60)+2
1