23.19 problem 33.5 (g)

Internal problem ID [13609]

Book: Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section: Chapter 33. Power series solutions I: Basic computational methods. Additional Exercises. page 641
Problem number: 33.5 (g).
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _with_linear_symmetries]]

\[ \boxed {y^{\prime \prime }-2 y^{\prime } x +6 y=0} \] With the expansion point for the power series method at \(x = 0\).

Solution by Maple

Time used: 0.0 (sec). Leaf size: 29

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

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

Solution by Mathematica

Time used: 0.001 (sec). Leaf size: 33

AsymptoticDSolveValue[y''[x]-2*x*y'[x]+6*y[x]==0,y[x],{x,0,5}]
 

\[ y(x)\to c_2 \left (x-\frac {2 x^3}{3}\right )+c_1 \left (\frac {x^4}{2}-3 x^2+1\right ) \]