Question

Given the arithmetic sequence an = −3 + 9(n − 1), what is the domain for n?

Answer 1

i believe that the answer is All integers where n
`\geq` 1

Answer 2

Answer: The set of domain for n is
`\{n\ \epsilon\ N:n\geq 1\}`

Explanation:

Since we have given that

`a_n=-3+(n-1)9`

And it is the arithmetic sequence.

So, The domain of a function is the complete set of all the possible values of n (i.e. independent variables).

So, we can put the value of n : 1 and greater than 1.

So, the set of domain for n is given by

`\{n\ \epsilon\ N:n\geq 1\}`