Question

Determine a soma dos Termos Da P.G. Infinita (9,3,1,...).?

Answer 1

Sn = a1/(1-q)
q = 9/3
q = 3
a1 = 9
Sn = 9/(1-3)
Sn = 9/(-2)
Sn = -9/2
ou
Sn = -4,5

Answer 2

Sn = a1/(1-q)q = 9/3q = 3a1 = 9Sn = 9/(1-3)Sn = 9/(-2)Sn = -9/2ouSn = -4,5