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Evaluate the sum \[\frac{1}{3^1} + \frac{2}{3^2} + \frac{3}{3^3} + \cdots + \frac{k}{3^k} + \cdots \]

 Oct 15, 2019

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 #1
avatar+6046 
+1

....

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 Oct 15, 2019
edited by Rom  Oct 18, 2019
 #1
avatar+6046 
+1
Best Answer

....

Rom Oct 15, 2019
edited by Rom  Oct 18, 2019

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