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Re: Defining function with indexed variables

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99328] Re: [mg99300] Defining function with indexed variables
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Sun, 3 May 2009 05:19:34 -0400 (EDT)
  • References: <200905020958.FAA15353@smc.vnet.net>
  • Reply-to: drmajorbob at bigfoot.com

How about

f[] = 0;
f[x__] := {x}.{x}

The first line is optional.

Bobby

On Sat, 02 May 2009 04:58:57 -0500, Paul Smith <phhs80 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
>



-- 
DrMajorBob at bigfoot.com


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