Question

Given the geometric sequence where a1 = 2 and the common ratio is 8, what is the domain for n?

A. All integers

B. All integers where n ≥ 1

C. All integers where n ≥ 0

D. All integers where n ≥ −1

Answer 1

B. All integers where n ≥ 1

Explanation:

We are given the geometric sequence where a1 = 2 and the common ratio is 8.

Where a1 is the first term.

we have to find the domain for n.

The general formula for the geometric sequence is:

`an=a1* r^(n-1)`

Clearly, n can take any integer value n≥1

Hence, the correct option is:

B. All integers where n ≥ 1