1. A discrete-time signal is defined as: x(n) = { n 1 +3' 1, 0, -3≤n≤-1 0≤n≤3 elsewhere a. Determine its values and sketch the signal x(n) b. Can u express the signal x(n) in term of signals 8(n) and u(n)?

Dis) Els) Gn) In the control system shown by the above block diagram, the disturbance is negligible, i.e. D(s) = 0. The transfer functions G1(s) and G2(s) are as follows: 3 G1(s) %3D 4s + 1 1 G1(s) s2 + 5s + 5 If the error transfer function E(s)/R(s) of the system is given by E(s) R(s) as3 + bs? + cs + d 4s3 + qs? + rs +p then what is the value of the constant "b' ?

Graph by hand a discrete time signal or discrete sequence modeled by: x₁ [n] = 0.2, para →→ 0 ≤ n ≤ 5n 1, para →-4 ≤n≤-1

please solve this, thanks,

A discrete-time system has the following unit-pulse response, Find the response of this system y[n] when: x[n] = u[n]. h[n] = ((0.5)" (0.25)”)u[n]

Suppose you are given the 4-point discrete-time sequence: x[n] = { x1 ,x2 ,0,7 } and its 4-point DFT: X[k] = { 15,2+j,-11,2 – j }. Find the value of the sample x, . Explain your reason.

Compute the energy and power of the following signal: x[n] = 2 (u[n]u[n - 6]) where u[n] denotes a discrete-time unit step function. ( n

7..

Which of the following statements is incorrect about the function f(n)=100n6+n5+3n2+5000? O f(n)=0(n©) O f(n)=0(n6) O f(n)=0(n10) O f(n)=0(n7) O f(n)=0(n6 log n) O f(n)=0(n7)

A discrete-time system has the following unit-pulse response, Find the response of this system y[n] when: x[n] = u[n]. h[n] = ((0.5)" (0.25)”)u[n]