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Signals & SystemsElementary Signals

The derivative of the continuous-time unit step u(t) is?

  • Au(t)
  • Bdelta(t)
  • Ct u(t)
  • D1 for all t
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Correct Answer: B. delta(t)
Explanation: In the generalized-function sense, d[u(t)]/dt = delta(t).
Reference: Standard signals and systems: elementary signals
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