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MathGroup Archive 2005

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Re: assigning functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56252] Re: [mg56204] assigning functions
  • From: DrBob <drbob at bigfoot.com>
  • Date: Wed, 20 Apr 2005 05:31:09 -0400 (EDT)
  • References: <200504190855.EAA02540@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

Clear@x
f[x_]:=x^2;
fprime[x_]=D[f[x],x]

2 x

Bobby

On Tue, 19 Apr 2005 04:55:01 -0400 (EDT), 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
>
>
>
>



-- 
DrBob at bigfoot.com


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