Resposta :
aₙ = a₁ . qⁿ⁻¹
q = a₂ / a₁
q = 64 / 128
q = 1/2
a₁ = 128
aₙ = a₁ . qⁿ⁻¹
a₈ = 128 . (1/2)⁸⁻¹
a₈ = 128 . (1/2)⁷
a₈ = 128 . 1⁷/2⁷
a₈ = 128 . 1/128
a₈ = 128/128
a₈ = 1
Resposta: a₈ = 1
aₙ = a₁ . qⁿ⁻¹
q = a₂ / a₁
q = 64 / 128
q = 1/2
a₁ = 128
aₙ = a₁ . qⁿ⁻¹
a₈ = 128 . (1/2)⁸⁻¹
a₈ = 128 . (1/2)⁷
a₈ = 128 . 1⁷/2⁷
a₈ = 128 . 1/128
a₈ = 128/128
a₈ = 1
Resposta: a₈ = 1