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Sum of geometric series (ratio 1/3)

EasyCalculus~2m

Sum the geometric series ∑n=0∞(13)n\displaystyle\sum_{n=0}^\infty \left(\tfrac13\right)^n.

Show hints (2)+
  1. Use $\sum r^n = 1/(1-r)$ for $|r|<1$.
  2. Here $r = 1/3$.

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1.5

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