dy/dx-y/x=x^2求详细解答步骤.

dy/dx-y/x=x^2求详细解答步骤. 求详细解y=cot（x+y）,求dy/dx步骤详细点 2x+y=dy/dx求高手解答谢谢. 求微分 y= arctan(-3x),则dy = dx;求微分 y= arctan(-3x),则dy = dx;请给出详细步骤 x(1+y^2)+y(1+x^2)dy/dx=0 尤其是积分的步骤请详细讲解 求dy/dx.x=ln(1+t²),y=t-arctant求详细步骤.不要只给答案. x^y-y^x=2,求dy/dx 求dy/dx=(x-y+5)/(x+y-2) (x^2)dy+（y^2)dx=dx-dy y=2x^2+x求dy/dx x=sin(y/x)+e^2 求dy/dx y=e^x/x^2+sin2x 求dy/dx 求微分方程 (dy)/(dx)+(y/x)=(a ln x)y^2 的通解 求解答,急! (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 x^2+y^2=e^y求dy/dx