Re: Function argument
- To: mathgroup at smc.vnet.net
- Subject: [mg66995] Re: Function argument
- From: "ben" <benjamin.friedrich at gmail.com>
- Date: Tue, 6 Jun 2006 06:28:17 -0400 (EDT)
- References: <e60o3q$g5s$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, you almost provided the solution yourself Bye Ben In[6]:= f1[x_]:=Sin[x] f2[x_]:=x^2+43 In[9]:= g[a_,h_]:=h[a] In[14]:= g[\[Pi],f1] g[1,f2] Out[14]= 0 Out[15]= 44 Bonny schrieb: > 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.