Respuesta :

an=3 because you x3 every time

a1=1 (first term)

Given : Geometric Sequence is 1 , 3 , 9 , 27 . . . .

The First Term of the Geometric Sequence is a₁

⇒ a₁ = 1

Common Ratio of a Geometric Sequence is the Ration of Second term to its First term

⇒ Common Ratio of Given Geometric Sequence = 3

Recursive Rule :

[tex]\mathsf{\implies a_n = (3)a_n_-_1}[/tex]