Re: Picewise Function
- To: mathgroup at smc.vnet.net
- Subject: [mg82120] Re: [mg82072] Picewise Function
- From: DrMajorBob <drmajorbob at bigfoot.com>
- Date: Fri, 12 Oct 2007 03:03:48 -0400 (EDT)
- Organization: Deep Space Corps of Engineers
- References: <3889394.1192079092221.JavaMail.root@m35>
- Reply-to: drmajorbob at bigfoot.com
It's round-about, I admit, but f2 fits the requirements you've listed: Clear[f1, f2] f1[zve_, kap_] := (est07[zve + kap] - est07[zve])/kap f2[zve_, kap_] /; f1[zve, kap] < 0.25 := f1[zve, kap] Any use of f2 with two arguments will result in computing f1[zve, kap], but f2[zve, kap] will return unevaluated if f1[zve, kap] >= 0.25. Bobby On Wed, 10 Oct 2007 23:20:58 -0500, Frank Hechtner <frank.hechtner at rub.de> wrote: > hi, > > I'm in trouble with a function. i created the following one > (est07[zve + kap] - est07[zve])/kap (something about german taxes, > refers to other functions) > > Now i want mathematica to tell that this function uses a specific > domain. The function should only be defined if the result of the > evaluation is <= 0.25. > > Does anyone know how to realize this=? > Thanks for help > > frank > > -- DrMajorBob at bigfoot.com