Re: lists of variables

*To*: mathgroup at smc.vnet.net*Subject*: [mg58161] Re: [mg58156] lists of variables*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Tue, 21 Jun 2005 06:02:34 -0400 (EDT)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

var[x_String, n_Integer?Positive] := ToExpression[Table[x<>ToString[k],{k,n}]]; f[x_,y_,z_] := Cos[x+y-z]; f@@var["t",3] Cos[t1 + t2 - t3] Bob Hanlon > > From: Heath Gerhardt <heathgerhardt at hotmail.com> To: mathgroup at smc.vnet.net > Date: 2005/06/20 Mon AM 05:21:33 EDT > Subject: [mg58161] [mg58156] lists of variables > > I need to make lists of variables, for example > > {t1,t2,t3} > > but have not been able to figure out how to make Mathematica do this. > Tried using > > Array[t,3] > > which gives > > {t[1],t[2],t[3]} > > but then I don't know how to set the t[i]'s in expressions similar to > > F[t[1]_,t[2]_,t[3]_]:=Cos[t[1]+t[2]-t[3]] > > thanks in advance > Heath > >