\[ \left (x^2+1\right ) y'(x)+x^2 y^{(3)}(x)-x y''(x)=0 \] ✓ Mathematica : cpu = 0.0246846 (sec), leaf count = 33
\[\left \{\left \{y(x)\to \frac {1}{2} c_1 x^2 \, _0\tilde {F}_1\left (;2;-\frac {x^2}{4}\right )+c_2 x Y_1(x)+c_3\right \}\right \}\] ✓ Maple : cpu = 0.046 (sec), leaf count = 18
\[ \left \{ y \left ( x \right ) ={\it \_C1}+{\it \_C2}\,x{{\sl J}_{1}\left (x\right )}+{\it \_C3}\,x{{\sl Y}_{1}\left (x\right )} \right \} \]