Answer Happy

2t = Investigate if the following sytems are memoryless, linear, time-invariant, casual, and stable. a. y(t) = x(t - 2) + x(2-t) b. y(t) = 520 (t)dt c. y(t) = [cos(3t)]x(t) d. y(n) = x(n − 2) – 2x(n – 8) e. y(n) = nx(n) f. y(n) = x(4n + 1) = =