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MathGroup Archive 2002

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Re: Plotting problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg35372] Re: Plotting problem
  • From: Matthias.Bode at oppenheim.de
  • Date: Wed, 10 Jul 2002 02:19:36 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello Steven,

Plot filled the suspected "hole".
Check:
Limit[(3 x^2 - 5 x + 2)/(x - 1), x->1]
1

If you want to show a gap make two Tables - up to the gap and behind the ga=
p
- and make two ListPlots which you then combine by Show[...].

Best regards,
Matthias Bode.
-----Urspr=C3=BCngliche Nachricht-----
Von: Steven Hodgen [mailto:shodgen at mindspring.com]
Gesendet: Montag, 8. Juli 2002 09:18
An: mathgroup at smc.vnet.net
Betreff: [mg35326] Plotting problem


Hello,

I'm a total Mathematica newbie, and I'm trying to get it to plot a simple
rational eq. in such a way that it indicates where missing points are.
Since I'm not sure how you'd prefer the eq. expressed, I've typed in in the
parents so there can be no question of where the denominator is, as well as
a cell expression.

(3 x^2 - 5 x + 2)/(x - 1)

Cell[BoxData[
    FractionBox[
      RowBox[{
        RowBox[{"3",
          SuperscriptBox["x", "2"]}], "-",
        RowBox[{"5", "x"}], "+", "2"}],
      RowBox[{"x", "-", "1"}]]], "Input"]

When I Plot[], this is just draws a straight line.  There is no indication
where the hole is. How can I get this "fully correct" graph?

Thanks
--Steven




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