\[
\boxed{
{\frac {{\rm d}^{2}}{{\rm d}{x}^{2}}}y \left( x \right) +d+b \left( y \left( x \right)  \right) ^{2}+cy \left( x \right) +a \left( y \left( x \right)  \right) ^{3}=0}
\]