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How do you calculate even or odd functions?

  1. Mar 29, 2006 #1

    Aka

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    I know an even function satisfies f(x)=f(-x) for all values of x in its domain. An odd function satisfies f(-x)=-f(x) for all the values of x in the domain. But, how do you calculate this if you have an equation?
    ex. f(x)=-2x+1
     
  2. jcsd
  3. Mar 29, 2006 #2
    You insert the value of x and see if it matches, e.g.
    f(x) = -2x+1
    f(-x) = -2(-x) + 1
    = 2x+1
    so it isn't even...

    Do a similar thing to test if it is odd (be careful with the brackets)
     
  4. Mar 29, 2006 #3

    Aka

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    ^ ok, thanks
     
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