Question

SAQ 5.1

1. Find the first four terms of the sequence whose general term is given by

i.

ii.

7 x 3"

n-2 5 x

2. Say what the pattern of is for each of the following sequences and give the next three

terms

i.

ii.

2, 6, 12, 20

8, 0.8, 0.08, 0.008

1 1 1 '2'3'4

Answer 1

1. (i) 7, 21, 63, 189

(ii) 20, 10, 5, 2.5

2. (i) n²+n (where n = 1, 2, 3, ..)

(ii) 8/(10^n) (where n = 1, 2, 3, ..)

(iii) 1/(n+1) (where n = 1, 2, 3, ..)