Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

First order unit step response

  1. May 10, 2014 #1
    I think I mostly understand how this works, and it makes intuitive sense. However, I'm a little bit confused by one step in the proving of this.

    On the second page of the attached PDF, there is this statement:

    x' + kx = (r/k + c2)δ(t) ... (followed by the cases of t<0 and t>0

    What comes after δ(t) is easy for me to follow, but I don't know where this δ(t) term comes from. Does this term evaluate to 0? If so, how? I would think it'd evaluate to (r/k + c2) because the (r/k + c2) is independent of t

    Thanks.
     

    Attached Files:

  2. jcsd
  3. May 10, 2014 #2
    Sorry folks. I just read the forum rules, and I think this is probably the wrong forum for such a thread.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook