For each geometric progression find the common ratio ‘r’, and then find a_n
-1, -3, -9, -27….

Question

For each geometric progression find the common ratio ‘r’, and then find a n -1, -3, -9, -27….

Philoid · Accepted Answer

First term (a) = -1

Common ratio (r) = =

n^th term in the GP (a_n) = ar^n-1

a_n = 3(^n-1 = 3ⁿ

For each geometric progression find the common ratio ‘r’, and then find an-1, -3, -9, -27….