![]() ![]() Example: Find the sum of Arithmetic Sequence -5, -2, 1. S n n/2 2a 1 + (n 1)d Solved Example on Finding the Sigma of Arithmetic Sequence. Where 'a n' is the nth term in the sequence, 'a' is the first term, 'r' is the common ratio between two numbers, and 'n' is the nth term to be obtained. Finally, we get the sum of Arithmetic sequence formula to find the summation of sequences at a faster pace. ![]() Where 'a n' is the nth term in the sequence, 'a' is the first term, 'd' is the common difference between two numbers, and 'n' is the nth term to be obtained.Ī geometric sequence is a sequence where every term bears a constant ratio to its preceding term. The general form of a geometric sequence can be written as:
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