Question

determine o oitavo termo da PG(4,16,64,..)

Answer 1

a1 = 4
q = 16/4 = 4
n = 8
an = a1*q^(n-1)
an = 4*4^(8-1)
an = 4*4^7
an = 4^8
an = 65.536

Answer 2

razão = 16 / 4 = 4
q = 4

A8 = A1 • ( q ) 7
A8 = 4 • ( 4 ) 7
A8 = ( 4 )8
A8 = 65536