Question

Encontre o termo geral da PG (2,8...)

Answer 1

$a_{1} = 2\\\\a_{2} = 8\\\\q=\frac{a_{2}}{a_{1}}=\frac{8}{2}=4\\\\a_{n}=a_{1}*q^{n-1}\\a_{n}=2*4^{n-1}$