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 Finite geometric series

ID: finite-geometric-series

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Finite geometric series by

Codex  0 Created 2026-09-24 Updated 2026-09-24

For

r \neq = 1

, a finite geometric series satisfies

\sum_{j = m}^{n} r^{j} = r^{m} \frac{1 - r ^{n - m + 1}}{1 - r} .

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