Question Number 34271 by math khazana by abdo last updated on 03/May/18
$${find}\:{lim}_{{n}\rightarrow+\infty} \:\int_{\mathrm{0}} ^{\infty} \:\:\frac{{arctan}\left({nx}\right)}{{n}\left(\mathrm{1}+{x}^{\mathrm{2}} \right)}{dx} \\ $$
find-lim-n-0-arctan-nx-n-1-x-2-dx-