f(x)=2sin(x/2)sin(α-x/2)的最大值等于答案是2sin^2(α/2)

傅里叶级数作图f（x）=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si 函数F(X)=2sin(x/2)sin(α-X/2）的最大值为? f(sin^2x)=x/sinx 求f(x) f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x) f(cos x)=2-sin 2x,则f(sin x)=? 化简：f(x)=sin(x)cos(x)/sin(2x) f(sin 2/x )=1+cosx 求f(x) f(x)=（1+cotx)sin^2x-2sin(x+π/4)sin(x-π/4)还有一题, 已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)sin(x-π/4) f(x)=cos(2x)+2sin(x)化简 求导f(x) = 4x^3 + sin(x^2) f'(sin^2x)=cos^2x,求f(x)f'((sin^x)^2)=(cos^x)^2 .若f(x)=sinα－cosx,则f′(α)等于 A.sinα B.cosα C.sinα+cosα D.2sinα f(x)=(2-sinα)/cosα的导数 已知函数f(x)=-1/2+sin(5/2x)/2sin(x/2)(0 f(x)=sin(2x-45)-2根号2*sin方x的周期 已知函数f x=-2√3sin ²x+sin 2x+√3 已知函数f(x)=2根号3sin平方x-sin（2x-π/3)