Question

calcule a soma da P.G. infinita que tem a1=5 e razão q=-2/3

Answer 1

a1 = 5
q = - 2/3

S∞ = a1 : (1 - q)
S∞ = 5 : (1 - (- 2/3))
S∞ = 5 : (1 + 2/3)
S∞ = 5 : (5/3)
S∞ = 5 . 3/5
S∞ = 3