\[ a y(x)+\left (x^2-1\right ) y''(x)+x y'(x)=0 \] ✓ Mathematica : cpu = 0.0290575 (sec), leaf count = 50
\[\left \{\left \{y(x)\to c_2 \sin \left (\sqrt {a} \log \left (\sqrt {x^2-1}+x\right )\right )+c_1 \cos \left (\sqrt {a} \log \left (\sqrt {x^2-1}+x\right )\right )\right \}\right \}\]
✓ Maple : cpu = 0.021 (sec), leaf count = 45
\[ \left \{ y \left ( x \right ) ={1 \left ( {\it \_C1}\, \left ( \left ( x+\sqrt {{x}^{2}-1} \right ) ^{i\sqrt {a}} \right ) ^{2}+{\it \_C2} \right ) \left ( \left ( x+\sqrt {{x}^{2}-1} \right ) ^{i\sqrt {a}} \right ) ^{-1}} \right \} \]