Re: assigning functions
- To: mathgroup at smc.vnet.net
- Subject: [mg56206] Re: assigning functions
- From: juejung <juejung at indiana.edu>
- Date: Tue, 19 Apr 2005 04:55:03 -0400 (EDT)
- References: <opspforld7yw49cj@juergen>
- Sender: owner-wri-mathgroup at wolfram.com
sorry, i just found the solution myself. yes, the help file is helpful ;-) f[x_] := x^2; fprime[x_] = D[f[x], x] works just fine! the "set delayed assignment rule" for the second part was wrong. best juergen On Mon, 18 Apr 2005 10:17:35 -0500, juejung <juejung at indiana.edu> wrote: > dear all, > > i would like to do the following. > assign a function: > f[x_] := x^2; > > take its derivate: > D[f[x], x] > > and assign the result of this to a new function, like fprime[x]: > fprime[x_] := D[f[x], x] > > unfortunately that doesn't work. > when i try to evaluate fprime[2] i get an error message. > > can somebody please help, this haunts me for a while now. > > thanks and all the best > > juergen -- Using Opera's revolutionary e-mail client: http://www.opera.com/m2/