\[ y''(x)=-\frac {a^2 y(x)}{x^4}-\frac {2 y'(x)}{x} \] ✓ Mathematica : cpu = 0.0082499 (sec), leaf count = 25
\[\left \{\left \{y(x)\to c_1 \cos \left (\frac {a}{x}\right )-c_2 \sin \left (\frac {a}{x}\right )\right \}\right \}\] ✓ Maple : cpu = 0.009 (sec), leaf count = 21
\[\left \{y \left (x \right ) = c_{1} \sin \left (\frac {a}{x}\right )+c_{2} \cos \left (\frac {a}{x}\right )\right \}\]