Question

Find the first 5 terms of the sequence: an = (-1/2)^n - 1

a) -1, -1/2, -1/4, -1/8, -1/16
b) -1, 1/2, -1/4, 1/8, -1/16
c) 1, -1/2, 1/4, -1/8, 1/16
d) 1, 1/2, 1/4, 1/8, 1/16

Answer 1

When n = 1, an = 1
When n = 2, an = -1/2
When n = 3, an = 1/4

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