Question

Calcule a soma dos infinitos termos da PG (16, -4, 1, ...)

Answer 1

Resposta:

Explicação passo-a-passo:

$S=\dfrac{a_{1} }{1-q}\\\\S=\dfrac{16}{1-(\frac{-1}{4})}\\\\S=\dfrac{16}{\frac{5}{4}}\\S=16\ . \frac{4}{5}\\S=12,8$