1.7 problem 3.1

Internal problem ID [3853]

Book: Differential Equations, By George Boole F.R.S. 1865
Section: Chapter 2
Problem number: 3.1.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, class A], _rational, [_Abel, 2nd type, class A]]

Solve \begin {gather*} \boxed {\left (y-x \right ) y^{\prime }+y=0} \end {gather*}

Solution by Maple

Time used: 0.032 (sec). Leaf size: 15

dsolve((y(x)-x)*diff(y(x),x)+y(x)=0,y(x), singsol=all)
 

\[ y \relax (x ) = {\mathrm e}^{\LambertW \left (-x \,{\mathrm e}^{-c_{1}}\right )+c_{1}} \]

Solution by Mathematica

Time used: 60.018 (sec). Leaf size: 20

DSolve[(y[x]-x)*y'[x]+y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to e^{\text {ProductLog}\left (-e^{-c_1} x\right )+c_1} \\ \end{align*}