What is the magnitude of H(ω) for the three point moving average sys – McqOptions

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1.	What is the magnitude of H(ω) for the three point moving average system whose output is given by y(n)=\(\frac{1}{3}[x(n+1)+x(n)+x(n-1)]\)?
A.	\(\frac{1}{3}\|1-2cosω\|\)
B.	\(\frac{1}{3}\|1+2cosω\|\)
C.	\|1-2cosω\|
D.	\|1+2cosω\|
Answer» C. \|1-2cosω\|

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