1.

Suppose for input x(t) a linear time-invariant system with impulse response h(t) produces output y(t), so that x(t) * h(t) = y(t). Further, if |x(t)| * |h(t)| = z(t), which of the following statements is true?

A. For all t ∈ (-∞, ∞), z(t) ≤ y(t)
B. For some but not all t ∈ (-∞, ∞), z(t) ≤ y(t)
C. For all t ∈ (-∞, ∞), z(t) ≥ y(t)
D. For some but not all t ∈ (-∞, ∞), z(t) ≥ y(t)
Answer» D. For some but not all t ∈ (-∞, ∞), z(t) ≥ y(t)


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