Question

Dada a PG (5,15,45),determine:termo geral e razão

Answer 1

An= a1•(n-1)•r
3=razão
Termo geral:
An=a1•(n-1)•3

Answer 2

P.G.(5,15,45)
q =  a 2/a 1
q = 15/5
q = 3
a n = a 1 . q^n - 1