1.

If Z{x1(n)}=X1(z) and Z{x2(n)}=X2(z) then Z{x1(n)*x2(n)}=?

A. X<sub>1</sub>(z).X<sub>2</sub>(z)
B. X<sub>1</sub>(z)+X<sub>2</sub>(z)
C. X<sub>1</sub>(z)*X<sub>2</sub>(z)
D. None of the mentioned
Answer» B. X<sub>1</sub>(z)+X<sub>2</sub>(z)


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