f-is-a-real-function-derivable-at-0-and-f-0-0-find-lim-n-k-1-n-f-k-n-2-

Question Number 51983 by maxmathsup by imad last updated on 01/Jan/19

f i s a r e a l f u n c t i o n d e r i v a b l e a t 0 a n d f (0) = 0 f i n d

{l i m}_{n \to + \infty} \sum_{k = 1}^{n} f (\frac{k}{n^{2}}) .