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MathGroup Archive 1998

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Re: Questions about functions.


  • To: mathgroup@smc.vnet.net
  • Subject: [mg11830] Re: Questions about functions.
  • From: Seth Chandler <SChandler@Central.UH.Edu>
  • Date: Wed, 1 Apr 1998 00:35:38 -0500
  • Organization: University of Houston
  • References: <6esdkf$57j@smc.vnet.net> <6f1lvm$f9n@smc.vnet.net> <6fi7ca$4ri@smc.vnet.net>

The answer to the first question is f[x___]:={x}

The second question strikes me as odd. In s[e,f], s is a symbol or
something that can serve as the head of an expresison. In the desired
output s is something susceptible to addition.

Seth J. Chandler
Associate Professor of Law
University of Houston Law Center

El alchemista wrote:

> I will appreciate your input to these two questions.
>
> 1 - How can I convert the sequence of all arguments of a function  into
> a list ?              In vain I tried      f[x__] := List @@ x
>
> 2 - How can I make functions which use their own names , for instance so
> that   s[e,f]   for some symbol   s   and all expressions    e , f
> becomes    (s+e)(s+f)  ?
>
> Many thanks
>
> jaime Combariza
> jaimeco@arizona.edu





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