GEOMETRTIC SEQUENCE

Geometric sequences follow a multiplication rule between every two consecutive terms.  The following equations are for the nth term of a geometric sequence where an is the nth term, n is the number of the term, and r is the common ratio.

Explicit: Recursive: 

an = a1r n – 1  an = r (an – 1)  

Khan Academy Practice:

• Introduction to Geometric Sequences

• Using the Explicit Formula 

• Using the Recursive Formula