Question

calcule o sexto termo da pg (3,6,12?...) sendo a1=3, q=2 e n=6

Answer 1

a 6 =?
P.G(3,6,12........)
a 1 = 3 
q = 2 
n = 6
a n = a 1 . q^n-1
 a 6 = 3 . 2 ^6 - 1
a 6 = 3 . 2^5
a 6 = 3 . 32
a 6 = 96