What is the value of XR( ) given X( )= ( frac{1}{1-ae^{-j }} ),|a|<1? – McqOptions

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1.	What is the value of X_R( ) given X( )= ( frac{1}{1-ae^{-j }} ),\|a\|<1?
A.	( frac{asin }{1-2acos +a^2} )
B.	( frac{1+acos }{1-2acos +a^2} )
C.	( frac{1-acos }{1-2acos +a^2} )
D.	( frac{-asin }{1-2acos +a^2} )
Answer» D. ( frac{-asin }{1-2acos +a^2} )

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