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3 votes
What is recursive rule for the sequence?

What is recursive rule for the sequence?-example-1

2 Answers

5 votes
It should be the first one an = -5 (an -1), a1 =9
answered
User Ales Potocnik
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4 votes

a_(n)=9(-5)^(n-1) \\ \\ a_(1)=9*5^(1-1)=9 \\ \\ a_(1)=9 \\ \\r=-5 \\ a_(n)=-5a_(n-1) This is geometric sequence, correct answer is A.
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User Toftis
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