Question

calcule o número de termos da pg 4,2,1...1/256

Answer 1

Ola Khonig

PG

a1 = 4
a2 = 2

q = a2/a1 = 2/4 = 1/2

termo geral

an = a1*q^(n-1)
an = 4*(1/2)^(n-1) = 1/256

1/2^(n - 1) = 1/1024 = (1/2)^10

n - 1 = 10

n = 11 termos

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