8.9 problem 214

Internal problem ID [2962]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 8
Problem number: 214.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, class A], _dAlembert]

Solve \begin {gather*} \boxed {y^{\prime } x -x -y-{\mathrm e}^{\frac {y}{x}} x=0} \end {gather*}

Solution by Maple

Time used: 0.009 (sec). Leaf size: 20

dsolve(x*diff(y(x),x) = x+y(x)+x*exp(y(x)/x),y(x), singsol=all)
 

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

Solution by Mathematica

Time used: 0.976 (sec). Leaf size: 30

DSolve[x y'[x]==x+y[x]+x Exp[y[x]/x],y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to x \log \left (-1+\frac {1}{1+e^{c_1} x}\right ) \\ y(x)\to i \pi x \\ \end{align*}