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MathGroup Archive 2007

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Re: Nullcline and getting "2" values for y

  • To: mathgroup at smc.vnet.net
  • Subject: [mg81540] Re: Nullcline and getting "2" values for y
  • From: Alois Steindl <Alois.Steindl at tuwien.ac.at>
  • Date: Wed, 26 Sep 2007 21:44:07 -0400 (EDT)
  • Organization: Inst. f. Mechanics II, TU Vienna
  • References: <fd7s8h$cgc$1@smc.vnet.net> <fddbt8$1o1$1@smc.vnet.net>

Hello,
it seems to me that the OP just didn't realize that he indeed plotted
y over f: The first function in ParametricPlot gives the x-axis, the
second one the y-axis. So he plotted the curve "y(f)". Since f is
non-monotone, he obtained 2 y-values for every f in the range.
Alois


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