2.1811   ODE No. 1811

\[ \sqrt {x^2+y(x)^2} y''(x)-a \left (y'(x)^2+1\right )^{3/2}=0 \] Mathematica : cpu = 300.161 (sec), leaf count = 0


, timed out

$Aborted

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


, exception

time expired