Results 1 to 2 of 2

Math Help - Heaviside Step Function

  1. #1
    Newbie
    Joined
    Apr 2010
    Posts
    1

    Heaviside Step Function

    Hello, I hope someone can help me with my Ordinary Differential Equations homework. The chapter is on Heaviside Step Function.

    The problem says: In each case evaluate x'(2), x'(5), and x''(5).


    One similar to the one I have to work is: t^2+H(t-3)*exp(-2*t)


    The books gives the following answers:
    x'(1.3) = 2.6
    x'(4) = 8 - 2*exp(-8)
    x''(4) = 2 + 4*exp(-8)

    I'm not sure what I'm suppose to be doing, thanks for your help.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Apr 2012
    From
    Erewhon
    Posts
    195
    Thanks
    127

    Re: Heaviside Step Function

    Quote Originally Posted by weebleofthewise View Post
    Hello, I hope someone can help me with my Ordinary Differential Equations homework. The chapter is on Heaviside Step Function.

    The problem says: In each case evaluate x'(2), x'(5), and x''(5).


    One similar to the one I have to work is: t^2+H(t-3)*exp(-2*t)


    The books gives the following answers:
    x'(1.3) = 2.6
    x'(4) = 8 - 2*exp(-8)
    x''(4) = 2 + 4*exp(-8)

    I'm not sure what I'm suppose to be doing, thanks for your help.
    If t<3 then x^{(n)} is the n-th derivative of t^2, if t>3 it is the n-th derivative of t^2+\exp(-2t) and there are no derivatives at t=3.
    Last edited by zzephod; May 15th 2013 at 01:45 AM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Laplace transform with heaviside step function
    Posted in the Differential Equations Forum
    Replies: 27
    Last Post: July 14th 2012, 12:46 AM
  2. Heaviside/Unit Step Function and other piecewise functions
    Posted in the Differential Equations Forum
    Replies: 2
    Last Post: November 19th 2010, 04:48 PM
  3. D.E involving the heaviside step function
    Posted in the Differential Equations Forum
    Replies: 4
    Last Post: October 28th 2009, 12:07 AM
  4. Heaviside Step Function?
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: August 15th 2008, 01:40 PM
  5. Heaviside step function graph
    Posted in the Calculus Forum
    Replies: 1
    Last Post: May 17th 2008, 09:15 AM

Search Tags


/mathhelpforum @mathhelpforum