\[ y''(x)=\frac {y(x)}{x^4}-\frac {\left (2 x^2+1\right ) y'(x)}{x^3} \] ✓ Mathematica : cpu = 0.0281212 (sec), leaf count = 50
\[\left \{\left \{y(x)\to c_1 e^{\frac {1}{2 x^2}}-\sqrt {\frac {\pi }{2}} c_2 e^{\frac {1}{2 x^2}} \text {erf}\left (\frac {1}{\sqrt {2} x}\right )\right \}\right \}\]
✓ Maple : cpu = 0.195 (sec), leaf count = 30
\[ \left \{ y \left ( x \right ) ={\it \_C1}\,{{\rm e}^{{\frac {1}{2\,{x}^{2}}}}}+{\it \_C2}\,{{\rm e}^{{\frac {1}{2\,{x}^{2}}}}}{\it Erf} \left ( {\frac {\sqrt {2}}{2\,x}} \right ) \right \} \]