Question

Given the geometric sequence an = 2(−3)n − 1, which of the following values for n lies in the appropriate domain for n?

Answer 1

Think that the domain is n=1.

Answer 2

n belongs to set of natural numbers

Explanation:

Given the geometric sequence

`a_n = 2(−3)^n − 1,`

Here an denotes the nh term.

Naturally, n cannot be 0 or negative.

Because the first term has n =1, and so on.

Domain for n is the set of all natural numbers

n = 1,2,3.....