dy/dx-2y/(1+x)=(x+1)^3

dy/dx-2y/(1+x)=(x+1)^3 dy/dx,y=(1+x+x^2)e^x 从(dx)/(dy)=1/y '导出：(d^2x)/(dy^2)=-y''/(y')^3 x^2+xy+y^3=1,求dy/dx 试从dx/dy=1/y'导出：d^2x/dy^2=-y''/（y')^3 题目中关于d[1/y']/dx}*[dx/dy dy/dx-2y/(x+1)=(x+1)^2 dy/dx=(e^x+x)(1+y^2)通解 dy/dx = 1/x-y dy/dx=x(1-y) dy/dx=x(1+y^2)/y通解 已知函数y=x(x-1)(x-2)(x-3)求导数值dy/dx , 解方程 x(dy/dx)^3=(1+dy/dx)