(x+x^2y)dx -(x^2y+y)dy =0的通解

dy/dx=(2x*x*x*y-y*y*y*y)/(x*x*x*x-2x*y*y*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 微分方程 dy/dx=(-2x)/y 一个微分问题y-x(dy/dx)为什么等于-x^2(d(y/x)/dx) du(x,y)=2xycos(x^2y)dx+x^2cos(x^y)dy,求u(x,y) dy/dx,y=(1+x+x^2)e^x 微积分.若x^y=y^x,则dy/dx.[x^2-xylnx]/[y^2-xylny] (x+x^2y)dx -(x^2y+y)dy =0的通解 z=x^2-y/x+y,而y=2x-3,求dz/dx. x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 x^2+y^2=e^y求dy/dx 求解微分方程xdy/dx-y=x^2+y^2 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?