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Basic Laplace transform problem

  1. Nov 10, 2009 #1
    1. The problem statement, all variables and given/known data
    http://u1.imgupload.co.uk/1257811200/9e4e_image.bmp


    2. Relevant equations
    find above


    3. The attempt at a solution

    in fact i had no problem in the progress of doing this question and finally i got F(s)= 1/1+s^2

    and i want to ask it is vaild for all value of s since it is s^2?
    is it true for no matter s is >0 or s is <0?
     
  2. jcsd
  3. Nov 10, 2009 #2

    Mark44

    Staff: Mentor

    I can't think of any reason why it wouldn't be defined for all real s.
     
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