Photos P 1 2 3 N

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P 1 2 3 n. An=1-2n/1+2n. N N 1 2 формула. 1/2+1/3+1/4+ +1/N формула. 1^3+2^3+...+N^3.
An=1-2n/1+2n. N N 1 2 формула. 1/2+1/3+1/4+ +1/N формула. 1^3+2^3+...+N^3.

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