What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20Hz?
A. cos(pi*n)
B. cos(2*pi*n)
C. cos(4*pi*n)
D. cos(8*pi*n)
Answer:A
What is output signal when a signal x(t)=cos(2*pi*40*t) is sampled with a sampling frequency of 20Hz?
A. cos(pi*n) B. cos(2*pi*n) C. cos(4*pi*n) D. cos(8*pi*n)
Explanation: From the question F=40Hz, Fs=20Hz