A geometric series is the sum of the terms of a geometric sequence. Learn more about it here. [2:53]

In this video, Sal gives a pretty neat justification as to why the finite geometric series formula works. [7:15]

See an example where a geometric series helps us describe a savings account balance. [6:17]

Sal evaluates a geometric series using the finite geometric series formula. [2:47]

A geometric series is the sum of the terms of a geometric sequence. Learn about geometric series and how they can be written in general terms and using sigma notation. [4:28]