Question Number 98945 by mathmax by abdo last updated on 17/Jun/20
$$\mathrm{calculate}\:\mathrm{lim}_{\mathrm{n}\rightarrow+\infty} \:\:\int_{\mathrm{0}} ^{\mathrm{n}} \left(\mathrm{1}−\frac{\mathrm{t}}{\mathrm{n}}\right)^{\mathrm{n}} \mathrm{arctan}\left(\mathrm{nt}\right)\mathrm{dt} \\ $$