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Homework Help: Are these two systems non- causal?

  1. Nov 26, 2012 #1
    1. The problem statement, all variables and given/known data

    y(t) = ∫-∞x(λ) dλ


    y(t) = ∫t-∞x(5λ) dλ

    2. Relevant equations

    3. The attempt at a solution

    They're both non-causal right?
    because in the first one the input can be less than t and in the second one it IS less than t?

  2. jcsd
  3. Dec 1, 2012 #2
    Take that as a....maybe..
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