Recent content by Joan Fernandez

  1. Joan Fernandez

    Graduate Why is the MGF the Laplace transform?

    Right, I follow... So my question could really be re-phrased as: when t is complex we have a bona fides LT, but what is it that we are doing when in your first integral t is real? Are we just "dotting" the function with an exponential to see how it decays?
  2. Joan Fernandez

    Graduate Why is the MGF the Laplace transform?

    In terms of recovering moments it makes no difference, but what about capturing any oscillating sinusoidal components?
  3. Joan Fernandez

    Graduate Why is the MGF the Laplace transform?

    The Laplace transform gives information about the exponential components in a function, as well as oscillatory components. To do so there is a need for the complex plane (complex exponentials). I get why the MGF of a distribution is very useful (moment extraction and classification of the...