The Series of a Geometric Sequence | Algebra Explained

This video teaches how to calculate the series of a geometric sequence. To find the sum of the first n terms of a geometric sequence: Sn = a1 * (1-r^n) / (1-r) To find the infinite sum of an infinite geometric sequence: S = a1 / (1-r) Note: You can only take an infinite geometric series as long as r (the common ratio) is between 1 and -1. Please ask any questions in the comments below and subscribe to join the journey