SOLUTION: A recursive formula for a sequence is an=an-1 +2n where a1=1. Write the first five terms of the sequence. (N, n-1, and 1 are all below the a. Wasn't sure how to type the whole

Algebra ->  Sequences-and-series -> SOLUTION: A recursive formula for a sequence is an=an-1 +2n where a1=1. Write the first five terms of the sequence. (N, n-1, and 1 are all below the a. Wasn't sure how to type the whole      Log On


   

Question 282815: A recursive formula for a sequence is an=an-1 +2n where a1=1. Write the first five terms of the sequence.
(N, n-1, and 1 are all below the a. Wasn't sure how to type the whole question, pic here: http://i39.tinypic.com/2cedxl.jpg)
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
A recursive formula for a sequence is

where a%5B1%5D=1. Write the first five terms of the sequence.



a%5B2%5D=a%5B1%5D%2B4=1%2B4=5

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a%5B3%5D=a%5B2%5D%2B6=5%2B6=11

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a%5B4%5D=a%5B3%5D%2B8=11%2B8=19

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a%5B5%5D=a%5B4%5D%2B10=19%2B10=29



1, 5, 11, 19, 29,...,n%5E2%2Bn-1,...
Edwin