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4 votes
Find the explicit formula that produces the given sequence 2,-6,18,-54,...

2 Answers

6 votes
To find explicit rule you need the first term and common difference
I don't think that is a sequence because it has no common difference
User Pavel Vlasov
by
8.1k points
2 votes
a_1 = 2, a_(n+1) = -3*a_n.
In words, the next term is the current
one multiplied by -3.
User Sugarcane
by
7.4k points

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