对于x=cos(y/x),求dy/dx.

对于x=cos(y/x),求dy/dx. y= (cos x)^x,求dy/dx ysinX=cos(X—y)求导数dy/dX 若y=cos²x,求导数dy/dx ysinx-cos(x+y)=0,求 dy/dx dy/dx=1-cos(y-x) d{cos(x-y)=sin(x-y)(dx-dy)这里dx-dy是什么意思呢? ysin3x-cos(y-x)=5 y=f(x) 求dy/dx du(x,y)=2xycos(x^2y)dx+x^2cos(x^y)dy,求u(x,y) x=cos y' ,其中y'=dy/dx (dy/dx)-y=x求微分方程 y=(sinx)^x 求DY/DX y=x+lnx,求dx/dy 求dy/dx= - x/y ysinx+cos(x-y)=0,求dy/dx|(x=π/2) 设y=cos(2x^2+x+1) 求dy/dx. 过程 解这个微分方程 cos(x+y)dy=dx dy/dx=cos(x+y+1)常微分方程