1.

The z-transform of (( frac{1}{4})^4 ) u[-n] is ___________

A. ( frac{4z}{4z-1} ), |Z|> ( frac{1}{4} )
B. ( frac{4z}{4z-1} ), |Z|< ( frac{1}{4} )
C. ( frac{1}{1-4z} ), |Z|> ( frac{1}{4} )
D. ( frac{1}{1-4z} ), |Z|< ( frac{1}{4} )
Answer» E.


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