Question

Given the arithmetic sequence an=-1+7(n-1), what is the domain for n?​

Answer 1

n E R

Explanation:

Since 7n-8 is a linear equation with no restrictions, n's domain is real numbers.

Answer 2

Explanation:

with 1st term = -1. and common difference is 7

in this series we can say that 1st term is -1 , 2nd term is 6 , 3rd term is 13 , and so on

therefore in a series we cannot define a 0th term , so here n will be greater than or equal to 1.