Results 1 to 4 of 4

Math Help - inverse laplace

  1. #1
    Senior Member
    Joined
    Feb 2010
    Posts
    379
    Thanks
    7

    inverse laplace

    find the inverse laplace of 1/((s^2+8s+17)(1+e^(-pi*s)))

    here second shifting can be applied but how as e^(-pi*s) is in the denominator

    please help
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2009
    Posts
    653
    Thanks
    128

    Re: inverse laplace

    You have to expand

    \frac{1}{(1+e^{-\pi s})}

    as an infinite series.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    Feb 2010
    Posts
    379
    Thanks
    7

    Re: inverse laplace

    what is the expansion series of 1/(1+e^-x)
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Jun 2009
    Posts
    653
    Thanks
    128

    Re: inverse laplace

    Make use of the binomial expansion,

    \frac{1}{1+x}=1-x+x^{2}-x^{3}+x^{4}- \dots.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Inverse Laplace
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: January 9th 2013, 06:52 AM
  2. Laplace Inverse
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 24th 2011, 04:50 PM
  3. Laplace/Inverse Laplace Questions
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: August 14th 2010, 11:29 AM
  4. Inverse Laplace
    Posted in the Differential Equations Forum
    Replies: 3
    Last Post: October 16th 2009, 02:22 AM
  5. Inverse Laplace
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 1st 2008, 03:41 AM

Search Tags


/mathhelpforum @mathhelpforum