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Homework Help: Polar Representation of Sinusoidal Functions

  1. Jan 23, 2008 #1
    1. The problem statement, all variables and given/known data

    What would the geometric explaination of exp(-i*x) be?

    2. Relevant equations

    Exp(-i*x), i being (-1)^1/2

    3. The attempt at a solution

    I'm pretty sure this is just a circle, created clockwise? Just want to check.
     
  2. jcsd
  3. Jan 23, 2008 #2
    The magnitude of [tex]e^{-i\,x}[/tex] is 1, so it represents a unit circle with center [tex](0,0)[/tex].

    If x varies on [tex][0,2\,pi)[/tex] the circle is created clockwise.
     
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