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The Modulus function

  1. Aug 27, 2007 #1
    Is "The modulus function" one function or two? f(x) = |x| suggests one, but f(x)=x, x>=0, f(x)=-x, x<0, suggests two.
     
  2. jcsd
  3. Aug 27, 2007 #2
    The modulus function is one function. It is an example of what is known as a piecewise function.
     
  4. Aug 27, 2007 #3

    bel

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    It's one function. Many other functions are written like this, where one function is defined by one function on one interval and defined by another function on another interval, they're called piece-wise functions.
     
  5. Aug 27, 2007 #4
    Many thanks neutrino and bel.
     
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