5.13 problem 13

Internal problem ID [7306]

Book: Own collection of miscellaneous problems
Section: section 5.0
Problem number: 13.
ODE order: 2.
ODE degree: 1.

CAS Maple gives this as type [[_2nd_order, _linear, _nonhomogeneous]]

\[ \boxed {y^{\prime \prime }+y=\frac {1}{x}} \] With the expansion point for the power series method at \(x = 0\).

Solution by Maple

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

\[ \text {No solution found} \]

Solution by Mathematica

Time used: 0.015 (sec). Leaf size: 148

AsymptoticDSolveValue[y''[x]+y[x]==1/x,y[x],{x,0,5}]
 

\[ y(x)\to x \left (-\frac {x^6}{5040}+\frac {x^4}{120}-\frac {x^2}{6}+1\right ) \left (-\frac {x^6}{4320}+\frac {x^4}{96}-\frac {x^2}{4}+\log (x)\right )+c_1 \left (-\frac {x^6}{720}+\frac {x^4}{24}-\frac {x^2}{2}+1\right )+c_2 x \left (-\frac {x^6}{5040}+\frac {x^4}{120}-\frac {x^2}{6}+1\right )+\left (-\frac {x^5}{600}+\frac {x^3}{18}-x\right ) \left (-\frac {x^6}{720}+\frac {x^4}{24}-\frac {x^2}{2}+1\right ) \]