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For a continuous time signal x(t) to be periodic with a period T, then x(t+mT) should be equal to ___________(a) x(-t)(b) x(mT)(c) x(mt)(d) x(t)I had been asked this question in class test.My question comes from Classification of Signals in section DSP – Basic Signaling of Digital Signal Processing

Answer» RIGHT answer is (d) x(t)

The EXPLANATION is: If a SIGNAL x(t) is said to be periodic with period T, then x(t+mT)=x(t) for all t and any integer m.


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