Question

A discrete time system can be
i. Linear or non-linear
ii. Time invariant or Time Variant
iii. Causal or noncausal
iv. Stable or unstable
v. Static Vs Dynamic
Examine the following systems with respect to every property mentioned above and give a brief
explanation.
a. y[n] = x[n]δ[n − 1]
b. y[n] = x[n] + nu[n + 1]
c. y(n) = x(2. n)
d. y(n) = 3. x(n)

Answer 1

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