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Signals & SystemsElementary Signals

The integral of delta(t) from minus infinity to t is?

  • Au(t)
  • Bdelta(t)
  • Ct
  • D0 for every t
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Correct Answer: A. u(t)
Explanation: Integrating the unit impulse from -infinity up to t produces the unit-step function.
Reference: Standard signals and systems: elementary signals
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