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Homework Help: Fourier transform pair for u(t)

  1. Nov 11, 2012 #1
    1. The problem statement, all variables and given/known data


    Ok I know Fourier transform pair for u(t) is pi*del(w)+1/(j*w)

    Am I right to say the transform pair of u(t)-u(t-1) is [pi*del(w)+1/(j*w)]-[pi*del(w-1)+1/(j*(w-1)]

    If not what is it?

    thanks
     
  2. jcsd
  3. Nov 11, 2012 #2

    rude man

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    Homework Helper
    Gold Member

    No.
    Use the time-shift theorem:
    If G(f) = F{g(t)} then F{g(t-T)} = G(f)exp(-j2πfT). Here f = ω/2π.
     
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