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Sum of Series Calculator
Calculate the sum of arithmetic or geometric series
Formulas: Arithmetic $S_n = \frac{n}{2}(a_1 + a_n)$, Geometric $S_n = a_1 \frac{1 - r^n}{1 - r}$ ($r \neq 1$). Enter series type and parameters below.
Series Parameters Input
Calculation Results
⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.