The impulse response of an initially relaxed linear system is (e^{-2 t} u(t)). To produce a response
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The impulse response of an initially relaxed linear system is \(e^{-2 t} u(t)\). To produce a response of \(t e^{-2 t} u(t)\), the input must be equal to
(a) \(2 e^{-t} u(t)\)
(b) \((1 / 2) e^{-2 t} u(t)\)
(c) \(e^{-2 t} u(t)\)
(d) \(e^{-t} u(t)\)
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