\[
\boxed{
{\it d0} \left( x \right)  \left( {\frac {\rm d}{{\rm d}x}}y \left( x \right)  \right) ^{2}+2\,{\it b0} \left( x \right) y \left( x \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +{\it c0} \left( x \right)  \left( y \left( x \right)  \right) ^{2}+2\,{\it d0} \left( x \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +2\,{\it e0} \left( x \right) y \left( x \right) +{\it f0} \left( x \right) =0}
\]