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Piecewise definition for a function

  1. May 23, 2005 #1
    Hi i have been given this function

    f(t)= (t-1)u(t)-(t-2)u(t-2)-u(t-4)

    and have to write a piecewise definition for it.

    the middle part of the function is given me problems.

    can anyone assist on what to do

    Thanks

    Jo
     
  2. jcsd
  3. May 23, 2005 #2
    Calculate f(0),f(1),f(2),f(3),f(4),f(5) (i think this should be enough)
    Can u see what to do now?

    -- AI
     
  4. May 23, 2005 #3
    Does u(t) simply mean 1 for t => 0 and 0 for t < 0
     
  5. May 23, 2005 #4
    well i assumed that to be the case,
    u(t) is normally the unit step function
    (ofcourse i might be doing too much of digital signal processing lately)

    -- AI
     
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