Question Number 30432 by abdo imad last updated on 22/Feb/18
$${find}\:\:{lim}_{{n}\rightarrow\infty\:} \sum_{{k}=\mathrm{1}} ^{{n}} \:\:\frac{{k}}{{n}}{e}^{−\frac{{k}^{\mathrm{2}} }{{n}^{\mathrm{2}} }} \:\:\:. \\ $$
find-lim-n-k-1-n-k-n-e-k-2-n-2-