\[ y'(x)=\frac {a x^2 y(x)^2+a x y(x)^2+a x y(x)^2 \log \left (\frac {1}{x}\right )+b x^4+b x^3+b x^3 \log \left (\frac {1}{x}\right )+y(x)}{x} \] ✓ Mathematica : cpu = 0.195383 (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 = 0.258 (sec), leaf count = 45
\[ \left \{ y \left ( x \right ) ={\frac {x}{a}\tan \left ( {\frac {4\,{x}^{3}+6\,\ln \left ( {x}^{-1} \right ) {x}^{2}+9\,{x}^{2}+12\,{\it \_C1}}{12}\sqrt {ab}} \right ) \sqrt {ab}} \right \} \]