Question

obtenha o numero de termos da pg no qual a1=3 q=2 e an=1536

Answer 1

Formula: an = a1.q^n-1


an = 1536
a1 = 3
n = ?
q = 2


1536 = 3.2^n-1
1536/3 = 2^n-1
512 = 2^n-1
2^9 = 2^n-1
n - 1 = 9
n = 9 + 1
n = 10