English

Geometric Sequence

How to find the nth term of a geometric sequence: definition, formula, 3 examples, and their solutions.

Definition

Formula

Example2, 6, 18, 54, 162, ..., an = ?

Example320, 160, 80, 40, ..., ak = 5/8, k = ?

Examplea2 = -6, a5 = 48, an = ?