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MathGroup Archive 2002

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Re: How to ...?

  • To: mathgroup at
  • Subject: [mg36331] Re: How to ...?
  • From: Mark Westwood <MarkCWestwood at>
  • Date: Mon, 2 Sep 2002 04:08:38 -0400 (EDT)
  • References: <akpka7$s34$>
  • Sender: owner-wri-mathgroup at


One simple approach is to write:

F[x_]:= x^2 /; 0<x<6
F[x_]:= x+1 /; x>=6

Hope this helps.  You want want to look up /; in the Help Browser.

Mark Westwood

Paskoski wrote:
> Dear MathGroup,
> I'd like to use Mathematica 4.0 to write a function having different
> expressions in different domain's intervals.
> Let's say:
> F[x_]=    x^2   if 0<x<6
>                x+1   if x>=6
> I know It's a stupid syntax problem, but I really do not know how/where to
> search the solution on the Mathematica Book
> Thank you in advance,
> PasKo.

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