Question

determine a fórmula do termo geral da P.A. (2,5..)​

Answer 1

Resposta:

an=a1+[(n−1)r]

an = 2 + [(n - 1)(3)]an=2+[(n−1)(3)]

an = 2 + 3n - 3an=2+3n−3

an = -1 + 3nan=−1+3n