3.555   ODE No. 555

$$\boxed{{\displaystyle \sqrt{{\left(\frac{\mathrm{d}}{\mathrm{d}x}y\left(x\right)\right)}^2+1}+x\frac{\mathrm{d}}{\mathrm{d}x}y\left(x\right)-y\left(x\right)=0}}$$

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

Mathematica: cpu = 0 (sec), leaf count = 0 $$\text{Hanged}$$

Maple: cpu = 0.015 (sec), leaf count = 15 $$\{y\left(x\right)=\sqrt{{\mathit{\_}\mathit{C}\mathit{1}}^2+1}+\mathit{\_}\mathit{C}\mathit{1}x\}$$