Prove that for all integers n>=3, P(n+1,3)-P(n,3)=3P(n,2) I know how induction works but this problem threw me off. I'm not sure how to work with the functions. Is there a trick to make me see it easier? How can I manipulate these functions?
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Thank you very much. I do know how induction works and just finished solving the problem with your help. Thanks again.
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