1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Convolution of two functions

  1. Oct 2, 2011 #1
    1. The problem statement, all variables and given/known data
    h(t) = u(t) (the unit step function)

    x (t) = e-t

    3. The attempt at a solution

    There is only one interval where the two functions overlap, and that's from 0 to t.

    The integral from 0 to t of e-[itex]\tau[/itex] d[itex]\tau[/itex] = -e-t

    Doesn't look right to me... what am I doing wrong?

    EDIT: This is discrete convolution, by the way.
    Last edited: Oct 2, 2011
  2. jcsd
  3. Oct 2, 2011 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook