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27-02-2021
Mathematics

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Find an explicit formula for the geometric sequence 1/2, -4, 32, -256

Respuesta :

28-02-2021

Answer:

Step-by-step explanation:

Common ratio r = a₂/a₁ = -4/(½) = -8

nth term = a₁rⁿ⁻¹ = ½(-8)ⁿ⁻¹

This can be further simplified to (-1)ⁿ⁻¹2³ⁿ⁻⁴

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