Electronics and Communication Engineering - Signals and Systems - Discussion
Discussion Forum : Signals and Systems - Section 4 (Q.No. 45)
45.
The range of value "a" for which system will be stable. If impulse response of DT system is = an ∪[n]
Answer: Option
Explanation:
Given n(n) = an ∪(n)
ROC is |z| > a open the mod function
when z > 0
⇒ z > a
z < 0 ⇒ - z > a or ⇒ z < - a
For stability ROC must include unit circle, so
|z| > a or - a < z < + a or -1 < a < + 1.
Discussion:
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