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 ???
 
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Thomas Koerner, Dipl.-Phys.
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