What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled wit – McqOptions

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1.	What is output signal when a signal x(t)=cos(2pi40*t) is sampled with a sampling frequency of 20Hz?
A.	cos(pi*n)
B.	cos(2pin)
C.	cos(4pin)
D.	cos(8pin)
Answer» D. cos(8pin)

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