f(x)=2根号3sinxcosx+cos²x-sin²xf(x)=根号2(2sinxcosx)+(cos²x-sin²x)f(x)=根号3sin2x+cos2xf(x)=2(2分之根号3sin2x+2分之1cos2x)f(x)=2[sin2xcos(π/6)+cos2xsin(π/6)]f(x)=2sin(2x+π/6)f(x...