H4L3Y
contestada

Find the first 5 terms in the sequence from the explicit formula: an=(-2)^n-1

A: -2,-4...
B: -1, -2...
C: 2, -4...
D: 1, -2...

Respuesta :

Answer:

D

Step-by-step explanation:

Substitute n = 1, 2, 3, 4, 5 into the explicit formula

a₁ = [tex](-2)^{0}[/tex] = 1

a₂ = [tex](-2)^{1}[/tex] = - 2

a₃ = [tex](-2)^{2}[/tex] = 4

a₄ = [tex](-2)^{3}[/tex] = - 8

a₅ = [tex](-2)^{4}[/tex] = 16

The first 5 terms are 1, - 2, 4, - 8, 16