1.The signal y(n)=x(n)-x(n-4) is Dynamic and Causal signal

True

False

2.If this output y(n,k) = y(n-k) for only one value of k, then the system is time invariant. *

True

False

3.The inverse z-transform for X(z) = (3z)/(z-1) is

a.x(n) = 15u(n)

b.x(n) = 15S(n)

c.x(n) = 3S(n)

d. x(n) = 3u(n)

e. None of above