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A geometric sequence is defined by the equation an = (4)3 − n. What are the first three terms of the sequence and what is the common ratio, r?

Respuesta :

[tex] x_{n} = 4^{3-n} , x_{1} =4^{3-1}=4^{2}=16 x_{2}=4^{3-2}=4^{1}=4 x_{3}= 4^{3-3}= 4^{0} =1 Common ratio = x_{3}/x_{2}= \frac{1}{4} [/tex]

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