\[ x^2 y^{(3)}(x)+(x+1) y''(x)-y(x)=0 \] ✗ Mathematica : cpu = 0.831859 (sec), leaf count = 0 , DifferentialRoot result
\[\left \{\left \{y(x)\to (x)\right \}\right \}\]
✗ Maple : cpu = 0. (sec), leaf count = 0 , result contains DESol
\[\{y \left (x \right ) = \mathit {DESol}\left (\left \{x^{2} \left (\frac {d^{3}}{d x^{3}}\textit {\_Y} \left (x \right )\right )-\textit {\_Y} \left (x \right )+\left (x +1\right ) \left (\frac {d^{2}}{d x^{2}}\textit {\_Y} \left (x \right )\right )\right \}, \left \{\textit {\_Y} \left (x \right )\right \}\right )\}\]