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MathGroup Archive 2006

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Function argument

  • To: mathgroup at smc.vnet.net
  • Subject: [mg66953] Function argument
  • From: "Bonny" <Banerjee at cse.ohio-state.edu>
  • Date: Mon, 5 Jun 2006 03:47:57 -0400 (EDT)
  • Organization: Ohio State University
  • Sender: owner-wri-mathgroup at wolfram.com

I would like to define a function g that evaluates another function f at a 
given value. That is,

g[a, f[x]] := f[a]

For example, I might want the function f[x]=ax^2+bx+c to be evaluated at x=1 
and get the result a+b+c. That is,

g[1, ax^2+bx+c] should evaluate to a+b+c.

Again, I might want the function f[x]=Sin[x] to be evaluated at x=pi and get 
the result 0. That is,

g[pi, Sin[x]] should evaluate to 0.

Is there a way to accomplish this in Mathematica? Any help would be 
appreciated.

Thanks,
Bonny. 



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