1.

Assertion (A): The system function

A. = z<sup>3</sup>-2z<sup>2</sup>+z/z<sup>2</sup>+1/4z+1/s is not causal
B. : If the numerator of H (z) is of lower order than the denominator, the system may be causal.
C. Both A and R are true and R is correct explanation of A
D. Both A and R are true and R is not correct Explanation of A
Answer» B. : If the numerator of H (z) is of lower order than the denominator, the system may be causal.


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