Question

Its related to MATLAB

Generate a continuous-time signal z(t)-cos(2π 10t + 5) + cos(2π30t + 5). You may use the part of the followings. a >>t0:0.001:1; >plot (t, x_t) b. Generate a discrete-time signal x[n] = (1/4)(u[n]-u[n-4). You may use the part of the followings >>a_n-ones (1, 4) s> b_nzeros (1, 7) >> stem(n, x n)

Answer 1

Matlab code for continuous and discrete signal plot clear all close all Answering question a %function for continuous signal x-@(t) cos (2 *pi* 10 . *t+pǐ /4 ) + cos ( 2*pi * 3 0 . *t+pi/4); t.0:0.001:1; x t-x(t) figure(1) plot (t,x_t) xlabel('t' ylabel ( , x( t ) . ) title('t vs. x(t) plot' %Answering question b n-5 -4 3-2 -1 0 1 23 4578 9 101; xn = (1/4)* (heaviside (n)-ne avis ide (n-4)); figure (2) stem (n,x n) xlabel(x(n)) ylabel'n) title( 'Discrete x_n plot') 888888888888% End of code %8888888888%

t vs. x(t) plot 1.5 0.5 -0.5 .1 0 03 04 05 0608 0.9 Discrete x plot 025 0.2 0.15 0.1 0.05 -5 10 x(n)

%%Matlab code for continuous and discrete signal plot
clear all
close all

%Answering question a.

%function for continuous signal
x=@(t) cos(2*pi*10.*t+pi/4)+cos(2*pi*30.*t+pi/4);

t=0:0.001:1;
x_t=x(t);

figure(1)
plot(t,x_t)
xlabel('t')
ylabel('x(t)')
title('t vs. x(t) plot')

%Answering question b.

n = [-5 -4 -3 -2 -1 0 1 2 3 4 5 7 8 9 10];
x_n = (1/4)*(heaviside(n)-heaviside(n-4));
figure(2)
stem(n,x_n)
xlabel('x(n)')
ylabel('n')
title('Discrete x_n plot')

%%%%%%%%%%%%% End of Code %%%%%%%%%%%%