MathGroup Archive 1992

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Bug in Integrate. Have you seen this?

  • To: mathgroup at yoda.physics.unc.edu
  • Subject: Bug in Integrate. Have you seen this?
  • From: fateman at peoplesparc.berkeley.edu (Richard Fateman)
  • Date: Mon, 17 Feb 92 19:23:21 PST

There is a whole class of integrals that Mathematics misses...

Mathematica 2.0 for MIPS
Copyright 1988-91 Wolfram Research, Inc.
....
                  2    4
           6 - 3 z  + z
Out[3]= --------------------
               2      4    6
        4 + 5 z  - 5 z  + z
...
In[5]:=Integrate[%3,{z,-Sqrt[2],Sqrt[2]}]

Out[5]= 0

In[6]:= NIntegrate[%3,{z,-Sqrt[2],Sqrt[2]}]

Out[6]= 3.14159







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