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Re: Defining function with indexed variables

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99340] Re: Defining function with indexed variables
  • From: Nicholas <physnick at gmail.com>
  • Date: Sun, 3 May 2009 05:21:44 -0400 (EDT)
  • References: <gth5g1$ev0$1@smc.vnet.net>

On May 2, 5:58 am, Paul Smith <phh... at gmail.com> wrote:
> Dear All,
>
> How can one define the function
>
> f(x1,x2,...,x100) := x1^2 + x2^2 + ... + x100^2
>
> using superscripts?
>
> Thanks in advance,
>
> Paul


I didn't really know what you were saying about superscripts, but I
believe this will work

f = Total@List[##]^2 &

and it works for any number of inputs.

Nick.


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