Question

MATLAB QUESTION

HOW TO FOLLOW TO EACH STEPS PLEASE GIVE TO EXPLAIN EACH SECTION THANKS!

% Section 1

clear variables;
close all;
clc;

% Use the "Run Section" button as you complete this script

% Given the matrix A and the vector B

A = [ 1 -4 2
-2 3 3
5 2 1];

b = [ -2
3
5];

% Calculate the product of A x B in the space below (grade = 10 points)

% Calculate the product of inverse(A) x B in the space below (10 points)

% Calculate c = the numeric value in the second row and
% first column of matrix [A] in the space below (10 points)

%% Section 2

clear variables;
close all;
clc;

% Create a variable x = range of 10 numbers
% between -pi and pi (radians) (grade = 10 points)

% Set y = sin(x) in the space below (10 points)

% Set z = x * sin(x) in the space below (10 points)
% HINT: You will need the .* for this operation instead of *

% Plot y and z versus x between the "hold on" and "hold off" commands
% Label the x and y axes properly and use appropriate units (10 points)
% use xlabel('Angle (Radians)')
% use ylabel('sin(x) and x sin(x)')
% Plot y using a blue line with circular markers (10 points)
% On the same plot, include z using a red line with triangular margers
% (1 point)
% use legend('sin(x)','x sin(x)') (10 points)
hold on

hold off

% After completing your script, click the "PUBLISH" tab
% Click the button in the "PUBLISH" tab, which is labeled Publish  

Answer 1

SECTION 1

% Given the matrix A and the vector B

A = [ 1 -4 2
-2 3 3
5 2 1];

B = [ -2
3
5];

% Calculate the product of A x B in the space below (grade = 10 points)
A * B

% Calculate the product of inverse(A) x B in the space below (10 points)
inverse(A) * B

% Calculate c = the numeric value in the second row and
% first column of matrix [A] in the space below (10 points)
c = A(2, 1)

SECTION 2

% Create a variable x = range of 10 numbers
% between -pi and pi (radians) (grade = 10 points)
x = linspace(-pi, pi, 10);

% Set y = sin(x) in the space below (10 points)
y = sin(x);

% Set z = x * sin(x) in the space below (10 points)
% HINT: You will need the .* for this operation instead of *
z = x.*sin(x);

% Plot y and z versus x between the "hold on" and "hold off" commands
% Label the x and y axes properly and use appropriate units (10 points)
% use xlabel('Angle (Radians)')
% use ylabel('sin(x) and x sin(x)')
% Plot y using a blue line with circular markers (10 points)
% On the same plot, include z using a red line with triangular margers
% (1 point)
% use legend('sin(x)','x sin(x)') (10 points)
hold on
plot(y, x, 'b--o', z, x, 'r--^');
xlabel('Angle (Radians)')
ylabel('sin(x) and x sin(x)')
print -dpng graph.png;
hold off

% After completing your script, click the "PUBLISH" tab
% Click the button in the "PUBLISH" tab, which is labeled Publish