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