dy/dx=(2x*x*x*y-y*y*y*y)/(x*x*x*x-2x*y*y*y)

dy/dx=x+y (x^2)dy+（y^2)dx=dx-dy 微分方程 dy/dx=(-2x)/y dy/dx=2y/x+3x/2y x^y-y^x=2,求dy/dx 求dy/dx=(x-y+5)/(x+y-2) （-2x-y+9)dy=(-y+x+3)dx dy/dx=-(x+y)/x通解 dy/dx,y=(1+x+x^2)e^x dy/dx=x/2y dy/dx=x+y 解方程y^2+x^2*(dy/dx)=x*y*(dy/dx) 微分方程(x+y)(dx-dy)=dx+dy的通解 x^2+y^2=e^y求dy/dx 求dy/dx=x/y+(cosx/y)^2通解 dy/dx=x(1+y^2)/y通解 微分方程dy/dx=y/(x+y^2)的通解? 已知x=y^2-4y,求dy/dx 1.dy/dx=(y-x)/(y+x)2.x^2*dy/dx=xy-y^2