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Math Help - Heaviside function

  1. #1
    Newbie
    Joined
    Oct 2009
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    24

    Heaviside function

    I have a function f(t) = 4t if 0 <= t <= 3 and f(t) = 12 if t > 3.
    My question is how to take the Heaviside of this, I'm not 100% comfortable with Heaviside in this case so I was wondering if someone could explain this. I know c = 3 but I'm not sure how to account for 12 and 4t properly.
    Thanks
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  2. #2
    Senior Member
    Joined
    Mar 2010
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    Try this function
    f(t)=4tH(t)H(3-t)+12H(t-3)
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  3. #3
    Newbie
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    Oct 2009
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    thanks for the reply, I will try that equation.
    could anyone elaborate how to get that result so that the equation is shifted properly?
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