3.124   ODE No. 124

$$\boxed{{\displaystyle x\frac{\mathrm{d}}{\mathrm{d}x}y\left(x\right)+x\cos \left(\frac{y\left(x\right)}{x}\right)-y\left(x\right)+x=0}}$$

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

Mathematica: cpu = 0.027003 (sec), leaf count = 16 $$\left\{\{y(x)\to 2x{\tan }^{-1}(c_1-\log (x))\}\right\}$$

Maple: cpu = 0.015 (sec), leaf count = 12 $$\{y\left(x\right)=-2\arctan (\ln \left(x\right)+\mathit{\_}\mathit{C}\mathit{1})x\}$$