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25-09-2021 Signals & Systems

Q. Y (t) = x (2t) is ________

A. Compressed signal
B. Expanded signal
C. Shifted signal
D. Amplitude scaled signal by a factor of 2


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Dapzoi Verified
Commented on 2021-09-25 13:12:14 (IST)
Answer: A

Explanation: By comparing the given equation with y (t) = x (at) we get a=2. If a>1 then it is compressed version of x (t).