2.1811   ODE No. 1811

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

\[ \sqrt {x^2+y(x)^2} y''(x)-a \left (y'(x)^2+1\right )^{3/2}=0 \] ✗ Mathematica : cpu = 300.024 (sec), leaf count = 0 , timed out

$Aborted

✗ Maple : cpu = 0. (sec), leaf count = 0 , exception

time expired