3.83   ODE No. 83

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

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

Mathematica: cpu = 40.401130 (sec), leaf count = 18 $$\text{DSolve}[y^{\prime }(x)-\tan (xy(x))=0,y(x),x]$$

Maple: cpu = 0.297 (sec), leaf count = 44 $$\{y\left(x\right)=-i\mathit{R}\mathit{o}\mathit{o}\mathit{t}\mathit{O}\mathit{f}(-\mathit{E}\mathit{r}\mathit{f}\left(\frac{(-x+\mathit{\_}\mathit{Z})\sqrt{2}}{2}\right)\sqrt{\pi }-\mathit{E}\mathit{r}\mathit{f}\left(\frac{\sqrt{2}(x+\mathit{\_}\mathit{Z})}{2}\right)\sqrt{\pi }+\sqrt{2}\mathit{\_}\mathit{C}\mathit{1})\}$$