SOLUTION: determine the recursive formula of 1,6,15,28,...
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Question 584779: determine the recursive formula of 1,6,15,28,...
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
1st difference ___ 5, 9, 13
2nd difference ___ 4, 4 ___ so formula is 2nd order (has a squared term)
n * (2n - 1) = 2n^2 - n
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