2.23. Given x()=3(13)u(t) + 3u (13) - 5u(1-6) (a) Sketch .x(1). (b) Find and sketch.x(31-6).

1- Find Z-transform if x(n) = blnl 2-If x(z) = 2z + 5z-1+ 6z-3 – z* find x(n). 3-Find zeros and poles of x(z): %3D (1--)(1-22-2) z + 2 4 – Find x(n) if x(z) : (z + 2)(z – 4) 5- If x(z) z-2 (2-z-2) find: %3! (a) [x(n) + x(n – 3)] * x(n) (b)x(n + 3) + 8(n – 1) 6- If x(n) = {2 1 -1 0 3},h(n) = {1 2 - 1}, Find out convolution of two sequences given above.

2. f(x) is given as: f(x) = x5+3x2-2x-4 a) Plot f(x) for x =-10 to 10. b) Find the roots of f(x)

You should clearly indicate the position ofton this sketch.(               need only handwritten solution .otherwise downvote.)