The nth term u_n of a geometric sequence is given by u_n = 3(4)^(n+1), n in ZZ^+. What is the common ratio r?
I supposed r might be 4 but the n th term of a geometric sequence is normally given by u_n = u_1*r^(n-1) , but in the question 4 has a power of n+1 so I'm confused by n+1 and n-1
I supposed
1 Answer
Nov 25, 2017
Explanation:
The Common Ratio
Since,