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MathGroup Archive 2004

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Re: problem writing a simple equation--urgent!!!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50362] Re: [mg50359] problem writing a simple equation--urgent!!!
  • From: DrBob <drbob at bigfoot.com>
  • Date: Mon, 30 Aug 2004 01:34:36 -0400 (EDT)
  • References: <200408290754.DAA29976@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

You haven't given me (or Mathematica) any idea what you want u[2,4] to be!

And what has x to do with it?

Bobby

On Sun, 29 Aug 2004 03:54:07 -0400 (EDT), aysegul <erkenays at yahoo.com> wrote:

> Hi all,
> I have a problem about writing an equation in mathematica.
> I am writing the following equation:
> u[x_, y_] = x + 2*y
> and when I write for example u[2,4] , it gives the result. But the
> problem that I have is expressing this equation with parameters. That
> is
> u[x[1], x[2]] = x[1] + 2*x[2]
> but when I ask u[2,4];
> it gives u[2,4] result.It doesn't calculate.
> So, how can I write this equation?
> Thanks all.
>
>
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


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