let-U-n-0-e-t-n-arctan-t-dt-find-a-equivalent-of-U-n-n-

Question Number 35631 by abdo mathsup 649 cc last updated on 21/May/18

l e t U_{n} = \int_{0}^{\infty} e^{- \frac{t}{n}} a r c t a n (t) d t

f i n d a e q u i v a l e n t o f U_{n} (n \to + \infty)