20.6 problem 6

Internal problem ID [2470]

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. Additional problems. Section 11.7. page 788
Problem number: 6.
ODE order: 2.
ODE degree: 1.

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

Solve \begin {gather*} \boxed {2 x y^{\prime \prime }+5 \left (1-2 x \right ) y^{\prime }-5 y=0} \end {gather*} With the expansion point for the power series method at \(x = 0\).

Solution by Maple

Time used: 0.016 (sec). Leaf size: 36

Order:=6; 
dsolve(2*x*diff(y(x),x$2)+5*(1-2*x)*diff(y(x),x)-5*y(x)=0,y(x),type='series',x=0);
 

\[ y \relax (x ) = \frac {c_{2} \left (1+x +\frac {15}{14} x^{2}+\frac {125}{126} x^{3}+\frac {625}{792} x^{4}+\frac {625}{1144} x^{5}+\mathrm {O}\left (x^{6}\right )\right ) x^{\frac {3}{2}}+c_{1} \left (1+10 x +\mathrm {O}\left (x^{6}\right )\right )}{x^{\frac {3}{2}}} \]

Solution by Mathematica

Time used: 0.003 (sec). Leaf size: 51

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

\[ y(x)\to \frac {c_2 (10 x+1)}{x^{3/2}}+c_1 \left (\frac {625 x^5}{1144}+\frac {625 x^4}{792}+\frac {125 x^3}{126}+\frac {15 x^2}{14}+x+1\right ) \]