\[ y'(x)=\frac {y(x)}{x}-F(x) \left (y(x)^2-a x^2\right ) \] ✓ Mathematica : cpu = 0.096177 (sec), leaf count = 40
\[\left \{\left \{y(x)\to \sqrt {a} x \tanh \left (\sqrt {a} \int _1^x K[1] F(K[1]) \, dK[1]+\sqrt {a} c_1\right )\right \}\right \}\]
✓ Maple : cpu = 0.045 (sec), leaf count = 26
\[ \left \{ y \left ( x \right ) =\tanh \left ( \int \!F \left ( x \right ) x\,{\rm d}x\sqrt {a}+{\it \_C1}\,\sqrt {a} \right ) x\sqrt {a} \right \} \]