Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1998

[Date Index] [Thread Index] [Author Index]

Search the Archive

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

  • To: mathgroup at
  • 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

  • Prev by Date: Re: How to Extract a common factor from a Sum
  • Next by Date: Dynamic Visualizer press release
  • Previous by thread: Re: How to declare Integers?
  • Next by thread: Re: (a-b)/(c-d)=!=(b-a)/(d-c) ???