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 Author Comment/Response xavier 07/28/05 12:41pm Hi, Let p be a polynomial defined by : p[y_] := Sum[Binomial[n + k - 1, k]*y^k, {k, 0, n - 1}] For sure the equality : ((1 - y)^(-n))*(1-(y^n)*p[1-y]) == p[y] is true for evry n>0. but I not able to use mathematica to prove it. If you try to Fullsimplify ((1 - y)^(-n))*(1-(y^n)*p[1-y]) - p[y] you get a result using Hypergeometric2F1 and then mathematica seems not to be able to reduce this expression to 0 :( Is there any way to help mathematica to find that ((1 - y)^(-n))*(1-(y^n)*p[1-y]) - p[y] is zero?? URL: ,

 Subject (listing for 'How to simplify this simple expression...') Author Date Posted How to simplify this simple expression... xavier 07/28/05 12:41pm Re: How to simplify this simple expression... Henry Lamb 07/29/05 11:49pm Re: How to simplify this simple expression... xavier 07/31/05 5:28pm Re: How to simplify this simple expression... Henry Lamb 08/08/05 01:05am
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