\[ \left (x^2+1\right ) y'(x)+x y(x)-1=0 \] ✓ Mathematica : cpu = 0.0220228 (sec), leaf count = 30
\[\left \{\left \{y(x)\to \frac {\sinh ^{-1}(x)}{\sqrt {x^2+1}}+\frac {c_1}{\sqrt {x^2+1}}\right \}\right \}\] ✓ Maple : cpu = 0.011 (sec), leaf count = 16
\[y \relax (x ) = \frac {\arcsinh \relax (x )+c_{1}}{\sqrt {x^{2}+1}}\]