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MathGroup Archive 1997

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Question regarding expressions with Sum[...]

  • To: mathgroup at smc.vnet.net
  • Subject: [mg7792] Question regarding expressions with Sum[...]
  • From: Thomas Koerner <koerner at iis.ee.ethz.ch>
  • Date: Tue, 8 Jul 1997 22:41:07 -0400
  • Organization: Swiss Federal Institute of Technology (ETHZ)
  • Sender: owner-wri-mathgroup at wolfram.com

I just started working with mathematica, and there is one thing I could
not figure out yet ...

Suppose I want to compute 

  Sum[a[i],{i,0,n+1}] - Sum[a[i],{i,0,n}]

with a[i] a series that I do not want to define in more detail.
Is there a way of obtaining 

 a[n+1]

as the result ???


 
________________________________________________________________________
Thomas Koerner, Dipl.-Phys.

Tel: (01) 445 2434 (Switzerland)      +411 445 2424 (Facsimile)
     +411 445 2434 (International)    +411 445 2400 (Switchboard)
          445 2400 (Secretary)        E-Mail: koerner at iis.ee.ethz.ch     

Integrated Systems Laboratory         Institut fuer Integrierte Systeme

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                          Technoparkstr. 1
                           CH-8005 Zurich


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