15.9 problem 9

Internal problem ID [14718]

Book: INTRODUCTORY DIFFERENTIAL EQUATIONS. Martha L. Abell, James P. Braselton. Fourth edition 2014. ElScAe. 2014
Section: Chapter 4. Higher Order Equations. Exercises 4.7, page 195
Problem number: 9.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_Emden, _Fowler]]

\[ \boxed {4 x^{2} y^{\prime \prime }+8 y^{\prime } x +y=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 14

dsolve(4*x^2*diff(y(x),x$2)+8*x*diff(y(x),x)+y(x)=0,y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {c_{1} +c_{2} \ln \left (x \right )}{\sqrt {x}} \]

Solution by Mathematica

Time used: 0.017 (sec). Leaf size: 24

DSolve[4*x^2*y''[x]+8*x*y'[x]+y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {c_2 \log (x)+2 c_1}{2 \sqrt {x}} \]