\[ y'(x)=\frac {a x^2 y(x)^2+a x y(x)^2+a x y(x)^2 \log \left (\frac {1}{x}\right )+b x^4+b x^3+b x^3 \log \left (\frac {1}{x}\right )+y(x)}{x} \] ✓ Mathematica : cpu = 0.207604 (sec), leaf count = 84
\[\left \{\left \{y(x)\to \frac {\sqrt {b} x \tan \left (\frac {1}{12} \left (4 \sqrt {a} \sqrt {b} x^3+9 \sqrt {a} \sqrt {b} x^2-6 \sqrt {a} \sqrt {b} x^2 \log (x)+12 \sqrt {a} \sqrt {b} c_1\right )\right )}{\sqrt {a}}\right \}\right \}\] ✓ Maple : cpu = 0.079 (sec), leaf count = 45
\[y \relax (x ) = \frac {\tan \left (\frac {\sqrt {a b}\, \left (4 x^{3}+6 x^{2} \ln \left (\frac {1}{x}\right )+9 x^{2}+12 c_{1}\right )}{12}\right ) x \sqrt {a b}}{a}\]