Answer:
The domain for n is:
All integers where n ≥ 1
Step-by-step explanation:
We are given a geometric sequence where the first term of the sequence is:
[tex]a_1=3[/tex] and the common ratio(r) is −1.
We are asked to find the domain for n.
We know that the domain of the geometric sequence whose terms are given by [tex]a_n[/tex] are all the natural numbers since by putting the n we get the corresponding term.
Hence, the domain is:
All integers where n ≥ 1