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System Theory

  1. Sep 18, 2009 #1
    1. The problem statement, all variables and given/known data


    Given y(t) = e^(-t) + e^(-t)

    How can we find the time constant from maths eqn (systems eqn to be exact)?

    2. Relevant equations



    3. The attempt at a solution

    t=-1 or 1??

    always relate to e^(1)??
     
  2. jcsd
  3. Sep 18, 2009 #2

    berkeman

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    Staff: Mentor

    Is there a typo in your first equation? y(t) = e^(-t) + e^(-t) = 2e^(-t) ?
     
  4. Sep 19, 2009 #3
    e^(-t) + e^(t)
     
  5. Sep 19, 2009 #4

    berkeman

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    Staff: Mentor

    That's extremely helpful. Could you please now re-state the question in full? And show your work so far towards a solution?
     
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