Ck 12: Analysis: Sums of Finite Geometric Series

Your algebra learners emphasize the"geometric" in geometric series as they use a common ratio between algebraic terms and find that it corresponds to a repeated similarity transformation. 

[Free Registration/Login may be required to access all resource tools.] Calculating the sums of finite geometric series

[Free Registration/Login may be required to access all resource tools.] This lesson covers identifying infinite geometric series for which a sum can be determined, and finding the sum.

[Free Registration/Login may be required to access all resource tools.] Calculating the sum of the values in an infinite geometric series

Sal Khan shows you how to figure out the formula for fixed mortgage payments using the sum of a geometric series. [17:36]

Watch this video and learn to derive the formula for a finite geometric series.

Geometric series either get bigger or approach a single number. So, how do you know which it is? An interactive presents three different geometric series with varying common ratios. With the aid of patterns, pupils determine values of r...

Using a slider, scholars build triangular numbers and their associated rectangles and use the geometric display to find the pattern to determine the next triangular number. They then relate that number to the area of the rectangle to...

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

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