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MathGroup Archive 2003

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Re: simple vactor magitude question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg43788] Re: simple vactor magitude question
  • From: Bas Zoetekouw <news200310 at caradhras.net>
  • Date: Sat, 4 Oct 2003 02:05:08 -0400 (EDT)
  • References: <blj5e0$1dv$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Nathan Moore wrote in comp.soft-sys.math.mathematica:
>  Suppose I generate a 1-d vecctor of "N" numbers, p[i], and now I want to
>  find the sum of (the vector element * index).  I think the syntax should look
>  something like,
> 
>  Sum[p[i]*i,{i,0,N}]
> 
>  but this doesn't seem to be the correct syntax - any help would be
>  appreciated.

Sum[p[i]*i,{i,0,N-1}] perhaps?

-- 
Kind regards,
  Bas Zoetekouw               ``Si l'on sait exactement ce que l'on va
                                faire, a quoi bon le faire?''
  bas at o2w.nl                                           Pablo Picasso


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