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MathGroup Archive 1999

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Equality of integrals

  • To: mathgroup at
  • Subject: [mg18145] Equality of integrals
  • From: Bill Campbell <bill at>
  • Date: Fri, 18 Jun 1999 00:51:45 -0400
  • Organization: UMD Dept. of Meteorology
  • Sender: owner-wri-mathgroup at

I defined the following two integrals:



I2= 3*Integrate[f[3x],{x,0,q/3}]

and asked if they were equal


The result was returned unevaluated.  Why doesn't Mathematica (3.0 for
Windows (for students) and 3.0 for DEC) know that the two are equal?  Is
this result only true if q is real?  If so, is there a way to let
Mathematica know q is real and thereby return True?  If I issue the


or any of a variety of functions, Mathematica returns True.

Bill Campbell

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