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Re: An Array of Equation Parameters

  • To: mathgroup at smc.vnet.net
  • Subject: [mg59924] Re: An Array of Equation Parameters
  • From: Bill Rowe <readnewsciv at earthlink.net>
  • Date: Thu, 25 Aug 2005 06:34:36 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

On 8/24/05 at 6:30 AM, acvwilson at gmail.com wrote:

>This seems like a fairly easy problem in other languages but I
>can't figure out how to do it in Mathematica.

>I am trying to set up an array of equation parameters, where each
>entry in the array is a list of parameters for a function.  I also
>don't know how to get values out of a list to plug into the
>function.  If anyone knows how to solve this problem please help me
>out.

It is a little easier to help when you give specific examples of what you are attempting. However, I think Sequence will do what you want.

Suppose I have a function f defined as

f[a_,b_,c_d_]:= expression

then if 

list = {a,b,c,d}

f[Sequence@@list] will do what you want. For example,

g[x_, y_, z_] := (x + y)/z
list = {x, y, z}; 
g[Sequence @@ list]

(x + y)/z
--
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