2 years ago

A recursive rule for the arithmetic sequence is a1=-3;an=an-1+7

1 answer:

8 0

The explicit rule for any arithmetic sequence is:

a(n)=a+d(n-1), a=initial term, d=common difference, n=term number

In this case a=-3 and d=7 so:

a(n)=-3+7(n-1)

a(n)=-3+7n-7

a(n)=7n-10

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