\[
\boxed{
{\frac {\rm d}{{\rm d}x}}y \left( x \right) =1/36\, \left( 18\,{x}^{3/2}+36\, \left( y \left( x \right)  \right) ^{2}-12\,{x}^{3}y \left( x \right) +{x}^{6} \right) \sqrt {x}=0}
\]