[2 marks] b) Given that x[n] = [n]-[n-1] 28 [n-2] 38 [n-3] and = h[n] 8[n] 28 [n-1] 8 [n-2]. i) Sketch the given input signals of x[n] and h[n]. ii) Obtain the limit values of x[n], h[n] and y[n]. iii) [2 marks] [3 marks] Solve the convolution of y(n) =k=0x[k] h[n-k] by using analytical method. Obtain the output for y[n]. [7 marks] iv) Sketch the output of y[n]. [2 marks]