3.125   ODE No. 125

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

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

Mathematica: cpu = 0.038505 (sec), leaf count = 16 $$\left\{\{y(x)\to x{\sin }^{-1}\left(\frac{e^{c_1}}{x}\right)\}\right\}$$

Maple: cpu = 0.047 (sec), leaf count = 14 $$\{y\left(x\right)=\arcsin \left(\frac{1}{\mathit{\_}\mathit{C}\mathit{1}x}\right)x\}$$