If H(z) is the system function of an LTI system and HI(z) is the syst – McqOptions

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1.	If H(z) is the system function of an LTI system and HI(z) is the system function of the inverse LTI system, then which of the following is true?
A.	H(z)*HI(z)=1
B.	H(z)*HI(z)=δ(n)
C.	H(z).HI(z)=1
D.	H(z).HI(z)=δ(n)
Answer» D. H(z).HI(z)=δ(n)

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