\[
\boxed{
{\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) ={\frac { \left( 3\,x+1 \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) }{ \left( 1+x \right)  \left( x-1 \right) }}-36\,{\frac { \left( 1+x \right) ^{2}y \left( x \right) }{ \left( x-1 \right) ^{2} \left( 3\,x+5 \right) ^{2}}}=0}
\]