f(x)=cos^2x-2Cos^2(x/2) 化简得什么
f ' (sinx)=cos^2x,求f(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?
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
f(x)=cos(2x-派/3)-2sin x*cos (派/2+x)
已知f(x)=cos(x/2)[sin(x/2)-cos(x/2)],其导为?
已知函数f(x)=cos(2x-π/3)+sin^2 x-cos^2 x
已知函数f(x)=cos(2x-π\3)+sin²x-cos²x
已知函数f(x)=2Cos x(Sin x-Cos x)+1
2(cos x)^2=1+cos 2x,
f(x)为奇函数,x>0,f(x)=sin 2x+cos x,则x