The function Z(s) has a pole at infinity if – McqOptions

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1.	The function Z(s) has a pole at infinity if
A.	the degree of numerator and denominator of Z(s) are equal
B.	the numerator of Z(s) is one degree higher than denominator
C.	the denominator of Z(s) is one degree higher than numerator
D.	the degree of numerator and denominator are either equal or differ by one
Answer» C. the denominator of Z(s) is one degree higher than numerator

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