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What does the exponential term mean in Fourier transform

  1. Apr 13, 2015 #1
    We know that Fourier Transform F(W) of function f(t) is summation from -infinity to +infinity product of f(t) and exp^{-j w t}

    Here, what does the exponential term mean?
  2. jcsd
  3. Apr 13, 2015 #2


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    Staff: Mentor

    Are you familiar with Fourier series? Because the exponential is simply the (complex) generalization of the sine and cosine that appears in the Fourier series.
  4. Apr 18, 2015 #3
    sir,Question was asked to me at time of interview.
  5. Apr 18, 2015 #4


    Staff: Mentor

    DrClaude didn't ask where the question came from. He asked whether you were familiar with Fourier series, and gave an explanation for the meaning of the exponential factor in the summation/integral.
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