\[ y(x) f'(x)+f(x) y'(x)+y''(x)+2 y(x) y'(x)=0 \] ✗ Mathematica : cpu = 30.3794 (sec), leaf count = 0
, could not solve
DSolve[y[x]*Derivative[1][f][x] + f[x]*Derivative[1][y][x] + 2*y[x]*Derivative[1][y][x] + Derivative[2][y][x] == 0, y[x], x]
✗ Maple : cpu = 0. (sec), leaf count = 0
, result contains DESol or ODESolStruc
\[y \relax (x ) = \textit {\_}b\left (\textit {\_a} \right )\boldsymbol {\mathrm {where}}\left [\left \{\frac {d}{d \textit {\_a}}\mathrm {\_}\mathrm {b}\left (\textit {\_a} \right )=-f \left (\textit {\_a} \right ) \textit {\_}b\left (\textit {\_a} \right )-\textit {\_}b\left (\textit {\_a} \right )^{2}-c_{1}\right \}, \left \{\textit {\_a} =x , \textit {\_}b\left (\textit {\_a} \right )=y \relax (x )\right \}, \left \{x =\textit {\_a} , y \relax (x )=\textit {\_}b\left (\textit {\_a} \right )\right \}\right ]\]