165k views
4 votes
Write the recursive formula for the geometric sequence.

a1 = -2 a2 = 8 a3= -32

User Kchetan
by
5.8k points

1 Answer

5 votes

Answer:

recursive

a(1) = -2 ; a(n) = -4 * a(n - 1)

explicit

a(n) = -2 * (-4)^(n - 1)

User BhushanVU
by
5.5k points