Question: Evaluate the following derivatives: (a) d / dt [u(t - 1) u(t + 1)] (b) d /dt [r(t - 6) u(t - 2)] (c) d

Evaluate the following derivatives:
(a) d / dt [u(t - 1) u(t + 1)]
(b) d /dt [r(t - 6) u(t - 2)]
(c) d /dt [sin 4tu(t - 31)]

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