1.4 problem 4

Internal problem ID [1873]

Book: Differential Equations by Alfred L. Nelson, Karl W. Folley, Max Coral. 3rd ed. DC heath. Boston. 1964
Section: Exercise 5, page 21
Problem number: 4.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {y^{\prime } x +y=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 9

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

\[ y \left (x \right ) = \frac {c_{1}}{x} \]

Solution by Mathematica

Time used: 0.024 (sec). Leaf size: 16

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

\begin{align*} y(x)\to \frac {c_1}{x} \\ y(x)\to 0 \\ \end{align*}