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MathGroup Archive 2005

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Sum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55175] Sum
  • From: mjumbo <mjumbo at nm.ru>
  • Date: Wed, 16 Mar 2005 05:35:51 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Can sombody explain me why

Sum[Exp[- k], {k, 0, Infinity}]

gives the correct result, while the following (imho equivalent) statements

x = Exp[-k]
Sum[x, {k, 0, Infinity}]

don't? What should I do to make it work? It is rather vexing to copy/paste long expressions instead of using short placeholders like x.
__________
www.newmail.ru -- Íîâàÿ Ïî÷òà: âñå ïî-íîâîìó.


  • Follow-Ups:
    • Re: Re: Sum
      • From: yehuda ben-shimol <bsyehuda@gmail.com>
    • Re: Sum
      • From: DrBob <drbob@bigfoot.com>
    • Re: Sum
      • From: Sseziwa Mukasa <mukasa@jeol.com>
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