Question: 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?

Options

A : H(z)*HI(z)=1

B : H(z)*HI(z)=?(n)

C : H(z).HI(z)=1

D : H(z).HI(z)=?(n)

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