Re: Graphing Functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg27277] Re: Graphing Functions*From*: bghiggins at ucdavis.edu (Brian Higgins)*Date*: Fri, 16 Feb 2001 03:58:26 -0500 (EST)*Organization*: The Math Forum*References*: <96asca$6f6@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Type in these variations after you have openend a new notebook: Plot[x^3-3x,{x,0,3}] or f=x^3-3x Plot[f,{x,0,3}] or f1[x]=x^3-3x Plot[f1[x],{x,0,3}] or f2[x_]=x^3-3x Plot[f2[x],{x,0,3}] Now try the following Plot[f2[t],{t,0,3}] Plot[f1[t],{t,0,3}] Plot[f[x],{x,0,3}] Plot[f(x),{x,0,3}] In the last four statement, the first will work , but the the others will produce errors. To understand what is going on try to read the Wolfram Book on defining functions and and use of patterns. There is also the possibility of using delayed assignments for your definitions of functions (f4[x_]:=x^3-3x) which I have not mentioned. Hang in, the learning hill is somewaht steep initially, but once you get to the top the view of possibilities is spectacular! Brian