\[
\boxed{
{\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) =-{\frac {a{x}^{2\,a-1}{\frac {\rm d}{{\rm d}x}}y \left( x \right) }{{x}^{2\,a}}}-{\frac {{b}^{2}y \left( x \right) }{{x}^{2\,a}}}=0}
\]