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Evaluate the sum 1/3^1 - 2/3^2 + 3/3^3 - ... + (-1)^(k - 1)*k/3^k + ... .

 Dec 15, 2021
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sumfor(k, 1, 100,  (-1)^(k - 1)*k/(3^k))==it converges to 3/16==0.1875

 Dec 15, 2021

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