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Plots with Variable Limits?

  • To: mathgroup at
  • Subject: [mg24100] Plots with Variable Limits?
  • From: "A. E. Siegman" <siegman at>
  • Date: Tue, 27 Jun 2000 00:51:55 -0400 (EDT)
  • Organization: Stanford University
  • Sender: owner-wri-mathgroup at

I want to make a test plot of a function  f[x,a]  versus  x  for some 
trial value of the parameter  a  without fixing that parameter for 
subsequent cells, e.g. something like

   Plot[ f[r,a], {x,-2a,2a} ]  /.  a->10

If I try this, Mathematica gives me a  "Plot::plln"  error -- but then 
goes ahead and makes the correct plot anyway.

I can of course turn off the error -- but what's a better, but still 
clean and simple, way to accomplish this.

Thanks   siegman at

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