Series Sum Calculator
Series Sum
Calculate the sum of arithmetic and geometric series given the first term, common difference or ratio, and number of terms
Formula
Arithmetic: S = n(a + last)/2; Geometric: S = a(1 - r^n)/(1 - r)
Frequently Asked Questions
What is an arithmetic series?
An arithmetic series is the sum of terms with a constant difference between consecutive terms. For example, 2 + 4 + 6 + 8 has a common difference of 2.
What is a geometric series?
A geometric series is the sum of terms where each term is multiplied by a constant ratio. For example, 3 + 6 + 12 + 24 has a common ratio of 2.