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19/07/2021 09:09:54

Chứng minh rằng: A = 1/2 - 2/2^2 + 3/2^3 - 4/2^4 + ... + 99/2^99 - 100/2^100 < 2/9


Chứng minh rằng: A = 1/2 - 2/2^2 + 3/2^3 - 4/2^4 + ...99/2^99 - 100/2^100 < 2/9

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