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1. For the signal x(t)=δ(t)–43e−tu(t)+13e2tu(t)
. It has how many poles and zeroes at infinity?
a) 1, 0
b) 2, 2
c) 2, 0
d) 0, 0
1. For the signal x(t)=δ(t)–43e−tu(t)+13e2tu(t). It has how many poles and zeroes at infinity?
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total answers (1)
Electrical Engineering
Electronics circuits
Answer: d
need an explanation for this answer? contact us directly to get an explanation for this answerExplanation: Since the degree of the numerator and denominator of X(s) are equal as shown below,
X(s)=1–431s+1+131s−2
=(s−1)2(s+1)(s−2)
∴ X(s) has neither poles nor zeroes at infinity.