f(sinx )=2|cosx |+1,则f(1/2)=
设f=[sin(2/x)]=1+cosx,求f(x),f[cos(2/x)].
若f(cos x)=cos 2x,则f(sin 15度)的值?
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
已知函数f(x)=2Cos x(Sin x-Cos x)+1
设f(sin x/2)=cosx+1,求f(x)及f(cos x/2).
f(x)为奇函数,x>0,f(x)=sin 2x+cos x,则x
已知f(x)=cos^2x/1+sin^2x求f'(π/4)
化简F(X)=2(COSX)^2+2 sin x cos x+1
已知函数f(x)=sinx,x∈[-π\2,π\2],若f(sinα)+f(cosα-1\2)=0,则sinα×cosα
已知f(x)=-1/2+sin(π/6-2x)+cos(2x-π/3)+cos平方x.
f(x)=sin[π/3(x+1)]-根号3cos[π/3(x+1)],则f(1)+f(2)+f(3)+……+f(200