General Formula For a Finite Geometric Series. N the nth term. You can use sigma notation to represent an infinite series.
The general formula for the nth term of a geometric sequence is.
Sn a1 r r2 r3. Find the common ratio in the following geometric finite sequence. Sn a ar ar2 arn2 arn1 1 r Sn ar ar2 arn2 arn1 arn 2 Subtract eqn. The general formula for the nth term of a geometric sequence is.