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Bug with Hypergeometric2F1?

• To: mathgroup at smc.vnet.net
• Subject: [mg99384] Bug with Hypergeometric2F1?
• From: irchans <infinitgames at yahoo.com>
• Date: Mon, 4 May 2009 06:02:18 -0400 (EDT)

When I run this code:

vol1[n_, k_] = Sum[ Binomial[n, i], {i, 0, k}]
vol1[1000, 1]
vol1[1000, 1.]

I get

Out[1] = 1001


Out[2] = 7.12935*10^288


I am running Mathematica 7.0.0 on windows 2000.  Does anyone else have
this problem?

• Follow-Ups:
  • Re: Bug with Hypergeometric2F1?
    • From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
  • Re: Bug with Hypergeometric2F1?
    • From: Daniel Lichtblau <danl@wolfram.com>