SOLUTION: Find the nth term of the sequence: 1,-3,9,-27,81

Algebra ->  Sequences-and-series -> SOLUTION: Find the nth term of the sequence: 1,-3,9,-27,81      Log On


   

Question 946499: Find the nth term of the sequence:
1,-3,9,-27,81
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
It's alternating signed powers of 3.
x%5Bn%5D=%28-3%29%5E%28n-1%29