Question

Calcule o quinto termo da pg (-81, -27, -9,)​

Answer 1

an = a1. qⁿ-¹

a5 = a1. q⁴ = -81.(1/3)⁴ = -81.(1/81)= -1 ✓

Answer 2

Resposta:

a1= -81

Q= 1/3

n= 5

an=a1.Q(n-1)

a5= -81.Q(5-1)

a5= -81.Q4

a5= -81.(1/3)4

a5= -81.(1/81)

a5= -1