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Evaluate the sum

\(\frac{1}{3^1} + \frac{2}{3^2} + \frac{3}{3^3} + \cdots + \frac{k}{3^k} + \cdots\)

 Mar 8, 2020
 #1
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See https://web2.0calc.com/questions/find-the-sum_5#r2

 Mar 8, 2020

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