RE: machine size real numbers?
- To: mathgroup at smc.vnet.net
- Subject: [mg35815] RE: [mg35800] machine size real numbers?
- From: "David Park" <djmp at earthlink.net>
- Date: Fri, 2 Aug 2002 02:41:51 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Rick,
You should consider working through as much of Part I of The Mathematica
Book as you can to become familiar with Mathematica syntax.
In Mathematica the function arguments are always enclosed in square
brackets, not parentheses.
x[t_] := 1 + Cos[2000*Pi*t] + Sin[4000*Pi*t]
In your plot statement you must plot x[t] and not just x. The following will
plot, but I don't think it is what you intended.
Plot[x[t], {t, 0, 8000*Pi}];
You probably want something more like...
Plot[x[t], {t, 0, Pi/1000}];
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: Rick Dyer [mailto:rkdyer at cecs.pdx.edu]
To: mathgroup at smc.vnet.net
In[1]:=
x[t_] := 1 + Cos(2000*Pi*t) + Sin(4000*Pi*t)
In[2]:=
Plot[x, {t, 0, 8000*Pi}]
Plot::"plnr": x is not a machine-size real number at t =
0.0010471975511965976
Plot::"plnr": x is not a machine-size real number at t =
1019.5597016296903
Plot::"plnr": x is not a machine-size real number at t =
2131.4776207838036
General::"stop": Further output of Plot :: "plnr" will be suppressed
during this calculation
I am trying to plot the function x(t) defined above, same thing
happens when i try to plot other similar functions always get an error
saying that the machine size number is nor real, I have tried to find
an answer in this message group, as well as the mathematica help
online and built in, if someone knows what is going on please help me.
My computer is an AMD 1Gig with 256MG of ram, if that is of
consequence. Windows XP pro
Any help would be appreciated
Thanks Rick