Summation Calculator

Calculate Σ summations

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About Summation Calculator

A summation (Σ) calculator that computes the sum of a series from i=start to i=end. Supports arithmetic series, geometric series, power sums, and custom expressions. Shows each term, running total, and closed-form formulas where available. All calculations are client-side. Essential for calculus, statistics, and algorithm analysis.

Summation Calculator Features

  • Σ notation
  • Arithmetic/geometric
  • Custom formula
  • Term-by-term
  • Closed form

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