What is the explicit formula for this geometric sequence -4,-8,-16,-32

AreusAstarte asked Jan 27, 2022

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AreusAstarte asked Jan 27, 2022

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14 votes

Answer:

an = - [2^(n+1)]

Explanation:

-4,-8,-16,-32

a1 = -4

r = -8/-4 = 2

the formula :

an = -4. 2^(n-1) = - [2^(n+1)]

Kristof answered Feb 2, 2022

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