An input discrete-time signal x(n) is defined as

x(n) = (1i3)" u(n), 0 5 n j 3 (a) If h(n) = { -1, 1, -1, 1, -1}, compute and plot the convolution (b) Determine the response of the relaxed system characterized by the impulse response h(n) = (1I2)"u(n), -3 5 n 5 U