Re: Graphing Functions for an idiot

*To*: mathgroup at smc.vnet.net*Subject*: [mg27268] Re: Graphing Functions for an idiot*From*: "Allan Hayes" <hay at haystack.demon.co.uk>*Date*: Fri, 16 Feb 2001 03:58:18 -0500 (EST)*References*: <96asca$6f6@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Plot[x^3-3x, {x,-2,2}] We could use an intermediate step: expr= x^3-3x; Plot[expr, {x,-2,2}] Or define a function using f[x_]:=x^3-3x Then use Plot[f[x], {x,-2,2}] Allan --------------------- Allan Hayes Mathematica Training and Consulting Leicester UK www.haystack.demon.co.uk hay at haystack.demon.co.uk Voice: +44 (0)116 271 4198 Fax: +44 (0)870 164 0565 "nsnn" <mailto:dontreply at tothis.ok> wrote in message news:96asca$6f6 at smc.vnet.net... > Hi, It's Idiot Here.... > > After spending an afternoon with the Mathematica Book, 4th Ed. by S.W. I > have found that I must be an official Idiot because I cannot figure out how > to do simple graphing of functions. > > Could someone please help me - step by step - realizing that you are > instructing an idiot who -tried- figuring this out from the book - to graph > simple functions. > > Here is an example of what I am looking for: > > Graph the function f(x)=x^3-3x > > I read the section on the command "Plot" and no matter what I do I either > get a graph that doesn't represent the function I am trying to graph or > errors. > > Thanks in Advance! > > -rp > >