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Signals & SystemsElementary Signals

The continuous-time unit step u(t) is conventionally equal to 1 for?

  • At<0
  • Bt>0
  • CAll t only when differentiated
  • DNo value of t
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Correct Answer: B. t>0
Explanation: Under the usual convention, u(t)=0 for t0; the value exactly at t=0 depends on convention.
Reference: Standard signals and systems: elementary signals
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