Question

In a geometric sequence , a3 =192 and a6 =3 . (a) Determine the common ratio, r. (b) what is the first term of the sequence? (c) Write a rule for the nth term of the sequence.

Answer 1

a. 1/4 or 0.25

b. 3072

c. Un = 3072(1/4)^(n-1)