Re: Define a function
- To: mathgroup at smc.vnet.net
- Subject: [mg34618] Re: Define a function
- From: lamontgra at yahoo.com (Graham)
- Date: Wed, 29 May 2002 02:47:05 -0400 (EDT)
- References: <acshar$ke2$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
"Michael Popp" <popp.michael at gmx.at> wrote in message news:<acshar$ke2$1 at smc.vnet.net>... > Hello > > I want to define a function in Mathematica. But just f[x_]:=... does not > work, because I have to define different functions for different ranges of > the variable x. > For example: > > x < 10: f(x) = 0 > 10 < x < 20: f(x) = x > 20 < x: f(x) = x/2 > > How to do this? > > Thanks, greetings > Michael UnitStep[] is wanted: f[x]:=x*UnitStep[x-10]-(x/2)*UnitStep[x-20] p856 HTH Graham