A function N (S) is said to have a pole (or zero) at infinity, if the function N (1/S) has a pole (or zero) at S = ?

‚Äö√Ñ√∂‚àö‚Ä†‚àö¬™

A function N (S) is said to have a pole (or zero) at infinity, if the

1.	A function N (S) is said to have a pole (or zero) at infinity, if the function N (1/S) has a pole (or zero) at S = ?
A.	‚Äö√Ñ√∂‚àö‚Ä†‚àö¬™
B.	2
C.	0
D.	1
Answer» D. 1