\[ y''(x)=-\frac {y(x) \sec ^2(x) \left (2 x^2+x^2 \sin ^2(x)-24 \cos ^2(x)\right )}{4 x^2}-\tan (x) y'(x)+\sqrt {\cos (x)} \] ✓ Mathematica : cpu = 0.254246 (sec), leaf count = 46
\[\left \{\left \{y(x)\to \frac {1}{5} c_2 x^3 \sqrt {\cos (x)}+\frac {c_1 \sqrt {\cos (x)}}{x^2}-\frac {1}{4} x^2 \sqrt {\cos (x)}\right \}\right \}\]
✓ Maple : cpu = 0.115 (sec), leaf count = 32
\[ \left \{ y \left ( x \right ) ={\frac {{\it \_C2}}{{x}^{2}}\sqrt {\cos \left ( x \right ) }}+\sqrt {\cos \left ( x \right ) }{x}^{3}{\it \_C1}-{\frac {{x}^{2}}{4}\sqrt {\cos \left ( x \right ) }} \right \} \]