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  1. J

    Laplace Transform Question

    Here's an insight to why, as the how has been discussed already: A Fourier Transform is a special case of the Laplace transform where if s = σ +/- iω then σ = 0. The "σ" term in the Laplace Transform represents a DC offset introduced to a signal. If you expand the exponential e^{st} you get...
  2. J

    1st order PDE, seems easy but still confusing

    I don't see a 't' in either solution. Did you substitute it with s?