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Homework Help: Quick Notation Question

  1. Sep 14, 2006 #1
    [tex] V_{x} \equiv \Delta x / \Delta t [/tex]

    What is the difference between [tex] \equiv [/tex] and = ?

    I know that it means congruency in math but I somehow doubt that it's the case in this situation :P
  2. jcsd
  3. Sep 14, 2006 #2
    there's no difference, it just means average velocity is equal to change of distance divided by change of time.
  4. Sep 14, 2006 #3
    i figured as much...

    is there a reason for this convention? (the textbook uses both throughout)
  5. Sep 14, 2006 #4
    not sure, maybe the extra line on the equal sign just means that it's not just a number answer but also with units.
  6. Sep 14, 2006 #5
    I see

    well, thanks for the quick response!
  7. Sep 14, 2006 #6


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    Staff Emeritus
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    Gold Member

    It is usually used to denote a definition. So your statement is a definition of Vx
  8. Sep 14, 2006 #7
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