1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Laplace transform with time shift

  1. Sep 20, 2010 #1
    1. The problem statement, all variables and given/known data

    I need to find the Laplace transform of t*e-t*u(t-tau)

    2. Relevant equations and attempt at solution

    I know the general form of the transform, but my problem is in the time shift of the step function. If both parts of the expression were (t-tau), then I could just pull out an e(s*tau), but I have no idea what I'm supposed to do when one part has it and the other does not.

    Can anyone help get me started?
     
  2. jcsd
  3. Sep 20, 2010 #2

    vela

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Hint:

    [tex]te^{-t} = (t-\tau+\tau)e^{-(t-\tau+\tau)}[/tex]
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Laplace transform with time shift
  1. Laplace transform (Replies: 3)

Loading...