\[ y''(x)=-\frac {y(x) \sec ^2(x) \left (2 x^2+x^2 \sin ^2(x)-24 \cos ^2(x)\right )}{4 x^2}-\tan (x) y'(x)+\sqrt {\cos (x)} \] ✓ Mathematica : cpu = 0.242178 (sec), leaf count = 35
\[\left \{\left \{y(x)\to \frac {\left (4 c_2 x^5+20 c_1-5 x^4\right ) \sqrt {\cos (x)}}{20 x^2}\right \}\right \}\]
✓ Maple : cpu = 0.116 (sec), leaf count = 28
\[ \left \{ y \left ( x \right ) ={\frac {4\,{x}^{5}{\it \_C1}-{x}^{4}+4\,{\it \_C2}}{4\,{x}^{2}}\sqrt {\cos \left ( x \right ) }} \right \} \]