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Complete the recursive formula of the geometric sequence 7, -14, 28, -56, ....

User Tibortru
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1 Answer

6 votes

Answer:


a_(n) = - 2
a_(n-1)

Explanation:

A geometric recursive formula has the form


a_(n) = r
a_(n-1)

where r is the common ratio

Here r = - 14 ÷ 7 = - 2, thus


a_(n) = - 2
a_(n-1) with a₁ = 7

User Lasitha Konara
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