Problem 1 A continuous-time signal x(), which is zero for i s0, has the Laplace transform:...
Find the Laplace transform of the following continuous-time signal. x(t)=2 e-*cos(30)u(t) Your answer: 5+1 X(s) = s? + 25 + 10 Ox(s) = 25+ 2 52 + 25 + 10 X(s)= 25+2 52 + 25 +9 o X(s)= 5 + 1 s²+25+9 X(s) = 35+3 52 +2s + 10
Problem 2 Consider a continuous-time signal x(t), of which the Fourier transform is ( 21f # (1)= 1° X(t)e=1218i dt = le 1000 15 1 400 lo otherwise Discrete-time signal x[n] is obtained by sampling x(t) at sampling at every 1 us -i.e., x[n] = xy(10ºn). (a) Write discrete-time Fourier transform of x[n], X (elo). (b) Plot the magnitude and phase response of X (ejm).
Problem 4 Let x(t) be a continuous time signal whose Fourier transform has the property that Xe(ja)0 for lal 2 2,000. A discrete time signal aIn]x(n(0.5x 10-3)) is obtained. For each of the following constra ints on Xa(e/n), the Fourier transform of xaln], determine the coresponding constraint on Xe(ja) a) X(en) is real b) The maximum value of X4 (ea) over all is 1 c) Xa(ea)= Xa(e/ a-) Problem 4 Let x(t) be a continuous time signal whose Fourier transform...
In a continuous-time system, the laplace transform of the input X(s) and the output Y(s) are related by Y(s) = 2 (s+2)2 +10 a) If x(t) = u(t), find the zero-state response of the system, yzs(1). yzs() = b) Find the zero-input response of the system, yzi(t). Yzi(t) = c) Find the steady-state solution of the system, yss(t). Yss(t) =
# 1 : Imagine that you have a continuous-time signal x(t) whose continuous-time Fourier transform is as given below -25 -20 f, Hz -10 10 20 25 (a) (10 pts) Imagine that this signal is sampled at the sampling rate of F, 65 Hz. Sketch the FT of the resulting signal that would be at the output of an ideal DAC (like we discussed in class) when given these samples. (b) (10 pts) Repeat part (a) for the case that...
Problem 5. (Properties of Fourier transform) Consider a continuous time signal x(1) with the following Fourier transform: X(jw) = J 1 - if we l-207, 207] if|wl > 207 (3) Let y(t) = x(26) cos? (507). Sketch Y (w), i.e., the Fourier transform of y(t). (Note that 2 1 + cos(20) cos? (0) = 2
Q. 2 A continuous time signal x(t) has the Continuous Time Fourier Transform shown in Fig 2. Xc() -80007 0 80001 2 (rad/s) Fig 2 According to the sampling theorem, find the maximum allowable sampling period T for this signal. Also plot the Fourier Transforms of the sampled signal X:(j) and X(elo). Label the resulting signals appropriately (both in frequency and amplitude axis). Assuming that the sampling period is increased 1.2 times, what is the new sampling frequency 2? What...
Laplace transform of a continuous time signal is given as 4e-35g2+12e-355+125+9e-35+24 X(S) = (S+2)(25-3)2 Obtain the time domain expression of this signal separately for the given cases a) X(t) = 0 for t < A1, where ay is a constant. b) X(t) = 0 for t > 02, where az is a constant. c) X(t) = 0 for any t.
Problem #24: Find the Laplace transform F(s) - {S0) of the function () = (2-1) [U(1 - 2) - Uit - 6)). [2 marks]
Problem 1 (20 points) Given a signal x(t) = e-지디 1) Plot the signal x(t) in time domain. 2) Find the Laplace transform X(s) of this signal. 3) Plot the pole-zero plot and the region of convergence (ROC).