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Signals & SystemsSignal Transformations

The signal x(2t) is, relative to x(t),?

  • ATime-expanded by 2
  • BTime-compressed by 2
  • CDelayed by 2 s
  • DAmplitude-scaled by 2 only
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Correct Answer: B. Time-compressed by 2
Explanation: Replacing t by 2t compresses the time axis by a factor of 2.
Reference: Standard signals and systems: signal transformations
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