1.5 problem Problem 11

Internal problem ID [2082]

Book: Differential equations and linear algebra, Stephen W. Goode and Scott A Annin. Fourth edition, 2015
Section: Chapter 1, First-Order Differential Equations. Section 1.2, Basic Ideas and Terminology. page 21
Problem number: Problem 11.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

Solve \begin {gather*} \boxed {y^{\prime }-\frac {y}{2 x}=0} \end {gather*}

Solution by Maple

Time used: 0.002 (sec). Leaf size: 9

dsolve(diff(y(x),x)=y(x)/(2*x),y(x), singsol=all)
 

\[ y \relax (x ) = c_{1} \sqrt {x} \]

Solution by Mathematica

Time used: 0.023 (sec). Leaf size: 18

DSolve[y'[x]==y[x]/(2*x),y[x],x,IncludeSingularSolutions -> True]
 

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