GATE EE 2014 Set 1 — Question 44
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Signals & Systems → Laplace & Z Transforms → Inverse Z Transform
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Question
Let be the Z-transform of a causal signal . Then, the values of and are
Correct answer
(B) 0 and 1
Solution
For a causal signal, the Z-transform is given by .
Given . Using the power series expansion for :
Comparing this with the standard form:
We find:
Thus, and .
Given . Using the power series expansion for :
Comparing this with the standard form:
We find:
Thus, and .
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