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 splitting fraction

  1. Jan 9, 2008 #1
    Basically I don't know how F(s) can be split up to below.

    F(s) = [tex]\frac{1}{s^{2}(s-2)}[/tex]

    = [tex]\frac{1}{4}[/tex] ( - [tex]\frac{1}{s}[/tex] - 2 [tex]\frac{1}{s^{2}} + \frac{1}{s-2}[/tex] )

    I thought it would be 1/s^2 - 1 / s-2

    How does this work? Please explain.
  2. jcsd
  3. Jan 9, 2008 #2

    try using partial fraction:

    then multiply both side of the identity by s^2(s-2)
    then group the terms: s^2,s and constants(terms without s)
    finally equate both sides of the identity. and then calculate A,B C
    and then put in the term A/s+B/s^2+C/(s-2)
    then you will find the expected form.


Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Laplace splitting fraction
  1. Laplace Transform of (Replies: 26)

  2. Laplace Transforms (Replies: 10)