Internal problem ID [11314]
Book: An elementary treatise on differential equations by Abraham Cohen. DC heath publishers.
1906
Section: Chapter VIII, Linear differential equations of the second order. Article 55. Summary.
Page 129
Problem number: Ex 3.
ODE order: 2.
ODE degree: 1.
CAS Maple gives this as type [[_2nd_order, _with_linear_symmetries]]
\[ \boxed {x^{2} y^{\prime \prime }+4 x y^{\prime }+\left (-x^{2}+2\right ) y=0} \]
✓ Solution by Maple
Time used: 0.015 (sec). Leaf size: 19
dsolve(x^2*diff(y(x),x$2)+4*x*diff(y(x),x)+(2-x^2)*y(x)=0,y(x), singsol=all)
\[ y \left (x \right ) = \frac {c_{1} \sinh \left (x \right )}{x^{2}}+\frac {c_{2} \cosh \left (x \right )}{x^{2}} \]
✓ Solution by Mathematica
Time used: 0.045 (sec). Leaf size: 28
DSolve[x^2*y''[x]+4*x*y'[x]+(2-x^2)*y[x]==0,y[x],x,IncludeSingularSolutions -> True]
\[ y(x)\to \frac {2 c_1 e^{-x}+c_2 e^x}{2 x^2} \]