# How to find the sum of arithmetic series

Formula for the Sum of a Finite Arithmetic Series: The sum of a finite arithmetic series, {eq}\sum_{i=1}^na_i {/eq}, is often denoted {eq}S_n {/eq}, and a formula to compute this sum is.

**Pre-Calculus - Learn to find the sum of an arithmetic series**

The sum of an arithmetic series is found by multiplying the number of terms times the average of the first and last terms. Please follow the steps below to find the sum of the arithmetic sequence: Step 1: Enter the first term (a), the common difference (d), and the number of terms (n) in the given input box. .

Sum of Arithmetic Sequence Formula; When the Last Term is Given: S = n⁄2 (a + L) When the Last Term is Not Given: S = n⁄2 {2a + (n − 1) d}.

### Formula for the Sum of a Finite Arithmetic Series: The sum of a finite arithmetic series, {eq}\sum_{i=1}^na_i {/eq}, is often denoted {eq}S_n {/eq}, and a formula to compute this sum is.: How to find the sum of arithmetic series

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How to find the sum of arithmetic series | |

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