Question

Write the recursive formula for the geometric sequence.

a1 = -2 a2 = 8 a3 = -32

A. an = -4 + an-1

B. an = -2 + an-1

C. an = -2 • an-1

D. an = -4 • an-1

Answer 1

b

Answer 2

try to find a2 in terms of a1 (what do you do to a1 in order to get a2?)
and same for a3 and a2.