16.12 problem Problem 12

Internal problem ID [2399]

Book: Differential equations and linear algebra, Stephen W. Goode and Scott A Annin. Fourth edition, 2015
Section: Chapter 11, Series Solutions to Linear Differential Equations. Exercises for 11.2. page 739
Problem number: Problem 12.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [_Gegenbauer]

Solve \begin {gather*} \boxed {\left (x^{2}-1\right ) y^{\prime \prime }-6 y^{\prime } x +12 y=0} \end {gather*} With the expansion point for the power series method at \(x = 0\).

Solution by Maple

Time used: 0.0 (sec). Leaf size: 25

Order:=6; 
dsolve((x^2-1)*diff(y(x),x$2)-6*x*diff(y(x),x)+12*y(x)=0,y(x),type='series',x=0);
 

\[ y \relax (x ) = \left (x^{4}+6 x^{2}+1\right ) y \relax (0)+\left (x^{3}+x \right ) D\relax (y )\relax (0)+O\left (x^{6}\right ) \]

Solution by Mathematica

Time used: 0.001 (sec). Leaf size: 25

AsymptoticDSolveValue[(x^2-1)*y''[x]-6*x*y'[x]+12*y[x]==0,y[x],{x,0,5}]
 

\[ y(x)\to c_2 \left (x^3+x\right )+c_1 \left (x^4+6 x^2+1\right ) \]