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What would be general formula of a circle in form of variables ?

  1. Sep 7, 2014 #1
    General formula of a line is ax+b=0
    Similarly can we have a general formula of a circle ?
     
  2. jcsd
  3. Sep 7, 2014 #2
    The general formula for a line in a plane is y=mx+c
    The general formula for a circle in the x-y plane is x^2+y^2=r^2 (where r is the radius of the circle)
     
  4. Sep 7, 2014 #3

    SteamKing

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    There's an even more general equation for a circle, one whose center is not located at the origin. :smile:
     
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