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

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1.	What is the magnitude of H( ) 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}\|1-2cos \| )
B.	( frac{1}{3}\|1+2cos \| )
C.	\|1-2cos \|
D.	\|1+2cos \|
Answer» C. \|1-2cos \|

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