What are the explicit equation and domain for an arithmetic sequence with a first term of 5 and a second term of 3?

ANSWERS

2016-04-18 18:54:33

Any arithmetic sequence can be expressed as: a(n)=a+d(n-1), a=initial term, d=common difference, n=term number In this case a=5, and d=-2 so a(n)=5-2(n-1) which can be simplified... a(n)=5-2n+2 a(n)=7-2n The domain is restricted to integers from 1 to +oo.

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