f(cos x)=2-sin 2x,则f(sin x)=?

f(x)为奇函数,x>0,f(x)=sin 2x+cos x,则x 求导f(x) = cos(3x) * cos(2x) + sin(3x) * sin(2x). 若f(cos x)=cos 2x,则f(sin 15度）的值? 化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x) 若函数f(x)=sin(x+α)-2cos(x-α)是奇函数,则sinαcosα= 设f=[sin(2/x)]=1+cosx,求f(x),f[cos(2/x)]. f(x)=2cos*sin(x+π/3)-^3sin^2x+sinx*cosx 已知函数f(x)=2cos x sin(x+pai/6)-sin^2x+cos^2x. 已知函数f(x)=cos^4 x－2sin x cos x－sin^4 x 已知函数f(x)=sin平方+根号3 sin x cos x+2cos平方x,x∈R 已知f(x)=sin(x/2) + cos(x/2) +[cos(x/2)]^2-1/2 化简f(x)=2cos(x/2)·(sin(x/2)+cos(x/2))-1