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