f(x)=4sin(2∏/3-x)cosx,求f(∏/12)

化简下面的三角函数f(x)=sin^2x+2√3sin(x+∏/4)cos(x-∏/4)-cos^2-√3 f(sin x)=3-cos 2x,求f(cos x)=? 设f(sin x)=3-cos 2x,则f(cos x）=? 若F(sin x)=3-cos 2x 则F（cos x）=? f(sin x)=3-cos 2x求f(cos x) f(x)=2sin^2(π/4+x)+根号3(sin^2x+cos^2x)f(x)=2sin^2(π/4+x)+根号3(sin^2x-cos^2x) 符号打错了 f(x)=(2sin^4 x）+(2cos^4 x)+(cos^2 2x） -3 化简 化简f(x)=-sin(2x-7∏)cos(2x+4∏)= f(x)=sin^4x+2√3sinxcosx-cos^4x化简 已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简 求函数f(x)=4*cos^2(x)+3*sin(2x)的值域 f(2x)=sin (x+3*pi/4)+cos (x-pi/2), f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x) f(x)=2sin(x/4)cos(x/4)+√3cos(x/2).求f(x)最小正周期.令g(x)=f(x+∏/3)判断g(x)奇偶性 f(x)=sin(x+π/4)图像怎样变成F(x)=cos(2x) f(x)=cos(2x-x/3)+2sin(x-π/4)sin(x+π/4)sin(x+π/4)化简. 证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4 f(x)=sin^2x+2跟号3sin(x+派/4)cos(x-派/4)-cos^2x-跟号3化简