Formula
a_n = a_1 + (nā1)d
In an arithmetic sequence, each term increases by a constant difference d.
Example
For 2, 5, 8, 11, ..., the 10th term is 2 + 9Ć3 = 29.
FAQs
What is a sequence?
A sequence is an ordered list of numbers following a pattern.
How do I tell if it is arithmetic?
Check whether the difference between consecutive terms is constant.