Determine which of these properties hold or dont hold for

Question

Determine which of these properties hold or don't hold for the following discrete time systems. Justify your answers. IN each example, y(t) denotes the system output and x(t) denotes the system input. Properties: 1) Memoryless 2) Time invariant 3) Linear 4) Causal 5) Stable

d) y(n) = Ev{x[n-1]}
f) y(n) = x[n], n >= 1; 0, n=0; x[n], n <=-1