ashley122605
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Brainliest and 20 points!!!!

Represent the geometric series using the explicit formula.

2, −8, 32, −128, …

f(n) = 2 ⋅ (−4)↑(n−1)
f(n) = 2 ⋅ (4)↑(n−1)
f(n) = f(n − 1) ⋅ (−4)
f(n) = f(n − 1) ⋅ (4)

Respuesta :

Answer:

A

Step-by-step explanation:

The n th term ( explicit formula) for a geometric sequence is

f(n) = a[tex](r)^{n-1}[/tex]

where a is the first term and r the common ratio

Here a = 2 and r = - 8 ÷ 2 = - 4, thus

f(n) = 2[tex](-4)^{n-1}[/tex]

sophiasapp99

Answer:

f(n) = 2(-4)^(n-1)

Step-by-step explanation:

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