Find all such that the series

converges and compute the sum.

From the geometric series expansion we have,

This is valid for .

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#
Stumbling Robot

A Fraction of a Dot
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Compute the sum of the series *∑ x*^{n} / 3^{n+1}

Find all such that the series

converges and compute the sum.

From the geometric series expansion we have,

This is valid for .