My Math Forum matrix and pi product thing

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 March 24th, 2013, 02:08 PM #1 Member   Joined: Oct 2012 Posts: 56 Thanks: 0 matrix and pi product thing I attached a pdf, it has my questions there. [attachment=0:298ovoqs]factorials and matrix 2.pdf[/attachment:298ovoqs]
 March 24th, 2013, 07:41 PM #2 Member   Joined: Oct 2012 Posts: 56 Thanks: 0 Re: matrix and pi product thing Figured it out. ${\frac{\left(-1\right)^{j+i}\prod _{k=0}^{j-2}\left(\frac{1}{k!}\right)}{\left(j-i\right)!\,\left(i-1\right)!}}$ $i\leq j$ But I still don't know if this is known or not.

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