16-01-2019
Mathematics

contestada

Write the recursive rule and an explicit rule for the geometric sequence 9,27,81,243

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mathecoach mathecoach

16-01-2019

Answer:

Recursive

a(1) = 9 ; a(n+1) = 3 * a(n)

Explicit

a(n) = 9 * 3^(n-1)

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