Answers

2015-07-01T21:31:16+08:00
Solution:

a1= k
an= 1/k
n= 3

an= a1 (r)^n-1
1/k= k/k (r)^3-1
(1/k^2)= (r^2)
k (1/k)= k/k =1

k, 1 , 1/k
4 4 4