moreno99 moreno99
  • 18-10-2016
  • Mathematics
contestada

A geometric sequence is defined by the explicit formula an = 5(-3)n-1. What is the recursive formula for the nth term of this sequence?

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apologiabiology
apologiabiology apologiabiology
  • 18-10-2016
an=a1(r)^(n-1)
an=5(-3)^(n-1)
so then each term is multiplied by -3

so
f(n)=-3(f(n-1))
and
f(n)=5
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