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