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MathGroup Archive 2002

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Re: problems with the definition of a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg36658] Re: problems with the definition of a function
  • From: lalu_bhatt at yahoo.com (Bhuvanesh)
  • Date: Wed, 18 Sep 2002 02:09:35 -0400 (EDT)
  • References: <am3n85$6tk$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

bagarell at unipa.it (fabio bagarello) wrote:

> Hi there!!
> I have quite an easy and annoying problem with mathematica:
> I need to define a function f(x,y) which takes some values for
> x=0,2pi,4pi (indepently of y) and has a different expression for all
> the other values of y. This is easily done for one-dimensional
> functions but I am in serious troubles for my two-dimensional problem:
> any suggestion?
> Thanks a lot,
> Fabio

Hi,

Something like this?

In[1]:= f[x_,y_] := If[Mod[x,2*Pi] === 0, Exp[x], Sin[y]+x]

In[2]:= f[4*Pi, y]

         4 Pi
Out[2]= E

In[3]:= f[1, y]

Out[3]= 1 + Sin[y]

--
Bhuvanesh,
Wolfram Research.


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