Question

Determine o número de termo do PG (1,2,...512)

Answer 1

a1=4
q
 

(1,2,...512)

a1= 1
q= 2
an = 512

1.2^(n-1) = 512
2^(n-1) = 512
2^(n-1) = 2^9
n-1=9
n = 1+9

n = 10