2.138   ODE No. 138

\[ x^2 y'(x)-x^2-x y(x)-y(x)^2=0 \] Mathematica : cpu = 0.0784615 (sec), leaf count = 13


\[\{\{y(x)\to x \tan (\log (x)+c_1)\}\}\] Maple : cpu = 0.035 (sec), leaf count = 11


\[y \relax (x ) = \tan \left (\ln \relax (x )+c_{1}\right ) x\]