Asked by Bob
Hi! im looking to find relationships between sets of polygonal numbers.
I have found a few through the use of finite differences, (a relationship occurs between the formula to determine the polygonal number).
I have also found that the 2nd derivative of these formula corresponds to the polygonal number set. eg triangular the 2nd derivative is 1.
Any ideas would be appreciated! :):) thanks!
I have found a few through the use of finite differences, (a relationship occurs between the formula to determine the polygonal number).
I have also found that the 2nd derivative of these formula corresponds to the polygonal number set. eg triangular the 2nd derivative is 1.
Any ideas would be appreciated! :):) thanks!
Answers
Answered by
drwls
Formulas presented at this site may help you:
http://en.wikipedia.org/wiki/Polygonal_number
http://en.wikipedia.org/wiki/Polygonal_number
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