MathGroup Archive 2007

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explanation need!

  • To: mathgroup at
  • Subject: [mg73467] explanation need!
  • From: "dimitris" <dimmechan at>
  • Date: Sun, 18 Feb 2007 06:13:00 -0500 (EST)


Can somebody expalin the following code (which is used in order to
"block" the use of the RootReduce function by FullSimplify; this
example is adopted by Peter Pein's post here:

<< "Developer`"
s3 = Block[{RootReduce}, FullSimplify[Solve[1 + x^2 + x^3 == 0]]]

More specifically why is needed to change context first?
What does the function ClearCache here in particular?
Should the following command give a different output?



Thanks a lot!


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