\[
\boxed{
{\frac {\rm d}{{\rm d}x}}y \left( x \right) = \left( y \left( x \right)  \right) ^{3}-3\,{x}^{2} \left( y \left( x \right)  \right) ^{2}+3\,y \left( x \right) {x}^{4}-{x}^{6}+2\,x=0}
\]