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Khan Academy
Khan Academy: Geometric Series Intro
A geometric series is the sum of the terms of a geometric sequence. Learn more about it here. [2:53]
Khan Academy
Khan Academy: Finite Geometric Series Formula
In this video, Sal gives a pretty neat justification as to why the finite geometric series formula works. [7:15]
Khan Academy
Khan Academy: Geometric Series Introduction
See an example where a geometric series helps us describe a savings account balance. [6:17]
Khan Academy
Khan Academy: Worked Example: Finite Geometric Series (Sigma Notation)
Sal evaluates a geometric series using the finite geometric series formula. [2:47]