Re: product of an arithmetic sequence

"Sebastian Martin Ruiz" <smaranda@xxxxxxxxxx> writes:

> Hello all:
>
> There exists a formula simplified for the PRODUCT of an ARITHMETIC
> sequence?
>
> (With polynomial time complexity.)

Uh, where is the problem?

\prod_{k=0}^{n-1} a + k * b = b^n * \prod_{k=0}^{n-1} (a/b) + k
= b^n * \Gamma((a/b) + n) / \Gamma(a/b)

--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
.

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