f-function-C-f-1-f-2-let-take-a-k-f-k-0-k-prove-that-a-n-1-1-n-1-k-0-n-a-k-a-n-k-

Question Number 30750 by abdo imad last updated on 25/Feb/18

f f u n c t i o n C^{\infty} / f^{^{'}} = 1 + f^{2} l e t t a k e a_{k} = \frac{f^{(k)} (0)}{k!}

p r o v e t h a t a_{n + 1} = \frac{1}{n + 1} \sum_{k = 0}^{n} a_{k} a_{n - k}