Question

Calcule o 9° termo da PG (4, 8, 16...):

Answer 1

a1 = 4

q = 8/4 = 2

an = a1 x q^(n - 1)

a9 = 4 x 2^(9 - 1)

a9 = 4 x 2^8

a9 = 2^2 x 2^8

a9 = 2^10

a9 = 1024

Resposta: 1024