\[ y(x) (a+x \cot (x))+\left (2 x^2 \cot (x)+x\right ) y'(x)+x^2 y''(x)=0 \] ✓ Mathematica : cpu = 0.102212 (sec), leaf count = 38
\[\left \{\left \{y(x)\to c_1 \csc (x) J_{i \sqrt {a}}(x)+c_2 \csc (x) Y_{i \sqrt {a}}(x)\right \}\right \}\] ✓ Maple : cpu = 0.061 (sec), leaf count = 30
\[ \left \{ y \left ( x \right ) ={\frac {1}{\sin \left ( x \right ) } \left ( {\it \_C2}\,{{\sl Y}_{i\sqrt {a}}\left (x\right )}+{\it \_C1}\,{{\sl J}_{i\sqrt {a}}\left (x\right )} \right ) } \right \} \]