2.1811   ODE No. 1811

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

$$\sqrt{x^2+y(x{)}^2}{y}^{″}(x)-a{(y^{\prime }(x{)}^2+1)}^{3/2}=0$$ ✗ Mathematica : cpu = 300.045 (sec), leaf count = 0 , timed out

$Aborted

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

time expired