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(a-b)/(c-d)=!=(b-a)/(d-c) ???

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  • Subject: [mg12964] (a-b)/(c-d)=!=(b-a)/(d-c) ???
  • From: tdelling at (Tim Dellinger)
  • Date: Sun, 28 Jun 1998 02:51:53 -0400
  • Organization: University of Illinois at Urbana-Champaign
  • Sender: owner-wri-mathgroup at

How come
(a-b)/(c-d) === (b-a)/(d-c)

returns False, i.e. TrueQ[ (a-b)/(c-d) =!= (b-a)/(d-c) ]  returns True,


(a-b)/(c-d) === Simplify[ (b-a)/(d-c) ] 

returns True ???

Why does mere simplification change anything? I'm using Mathematica
3.0.?  on win95.

"Perhaps my most deeply rooted hobby is to understand         Tim
 the mechanisms of simple and familiar                   
tdelling at
 natural phenomena." Irving Langmuir

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