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MathGroup Archive 2000

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Re: powersum with a function with variable count of parameters

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25270] Re: [mg25262] powersum with a function with variable count of parameters
  • From: "Matt Herman" <Henayni at hotmail.com>
  • Date: Sun, 17 Sep 2000 17:33:37 -0400 (EDT)
  • References: <200009170847.EAA17957@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

Well, what you can do, is

f[list_]:= Sum[10^list[[r]], {r,1,Length[list]}

Matt
----- Original Message -----
From: "Klamser" <Klamser at t-online.de>
To: mathgroup at smc.vnet.net
Subject: [mg25270] [mg25262] powersum with a function with variable count of
parameters


> Hi,
>
> how can I write a function f[x_,xi__]=10^x+10^xi, that returns
> f[1,2,3]->10^1+10^2+10 ^3.
>
> When i use the above definition, I only get
>
> 10^1+10^2^3
>
> But I want to get
>
> 10^1+10^2+10 ^3
>
> Regrads, Peter
>
>
>
>


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