7.16 problem problem 16

Internal problem ID [407]

Book: Differential equations and linear algebra, 4th ed., Edwards and Penney
Section: Chapter 11 Power series methods. Section 11.1 Introduction and Review of power series. Page 615
Problem number: problem 16.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

Solve \begin {gather*} \boxed {2 y^{\prime } x -y=0} \end {gather*} With the expansion point for the power series method at \(x = 0\).

Solution by Maple

Time used: 0.003 (sec). Leaf size: 15

Order:=6; 
dsolve(2*x*diff(y(x),x)=y(x),y(x),type='series',x=0);
 

\[ y \relax (x ) = c_{1} \sqrt {x}+O\left (x^{6}\right ) \]

Solution by Mathematica

Time used: 0.001 (sec). Leaf size: 11

AsymptoticDSolveValue[2*x*y'[x]==y[x],y[x],{x,0,5}]
 

\[ y(x)\to c_1 \sqrt {x} \]