Images A1 B1 ФОРМУЛА

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A1 b1 формула. (1+X)^N. X^(N+1)/((N+1)*X+N!). (1/(N+1)! + 1/N!)*N!. Формула a_n^k=n(n-1) ...(n-k+1).
(1+X)^N. X^(N+1)/((N+1)*X+N!). (1/(N+1)! + 1/N!)*N!. Формула a_n^k=n(n-1) ...(n-k+1).

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