2.555   ODE No. 555

1. Problem in Latex
2. Mathematica input
3. Maple input

\[ x y'(x)+\sqrt {y'(x)^2+1}-y(x)=0 \] ✗ Mathematica : cpu = 301.531 (sec), leaf count = 0 , timed out

$Aborted

✓ Maple : cpu = 0.361 (sec), leaf count = 15

\[ \left \{ y \left ( x \right ) =\sqrt {{{\it \_C1}}^{2}+1}+x{\it \_C1} \right \} \]