y=cos^2(x^2-x)求导,答案是-2cos(x^2-x)sin(x^2-x)(2x-1)
求导y=(1+sin^2 x)/(cos(x^2))
求导f(x) = cos(3x) * cos(2x) + sin(3x) * sin(2x).
y=sin(2x+5)求导为什么等于cos(2x+5)*(2x+5)'.我算的答案是cos(2x+5)
y=x-sin(x/2)cos(x/2) 求导数 请写出具体过程,
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)
证明COS(X+Y)COS(X-Y)=COS^2X-SIN^2Y
2cos x (sin x -cos x)+1
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
y=cos(-x)求导 1)y=cos(-x)=cos x y'=-sin x 2)y'=-sin(-x)= sin x
求导数:y=[sin(x/2)+cos(x/2)]^2-1
sin(x+y)sin(x-y)=k,求cos^2x-cos^2y
y=cos^3(2x)+e^x求导数