Check the file: Question.pdf

**Subject Mathematics MATLAB for Mathematics**

Check the file: Question.pdf

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function main()

%a)

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

b=[4;8;-3];

determinantA = det(A)

%1.

x1=A\b

%2.

x2=inv(A)*b

%3.

x3=(b'/A')'

%(b)

x=linspace(-5,5,50);

y=linspace(-5,5,50);

z=linspace(-5,5,50);

[X,Y]=meshgrid(x,y);

surf(X,Y,x1(3)*ones(size(X)));

hold on

surf(X,x1(2)*ones(size(X)),Y);

surf(x1(1)*ones(size(X)),X,Y);

hold off

xlabel('axis x');

ylabel('axis y');

zlabel('axis z');

title('Intersection 1');

str1='intersection point x';

text(x1(1),x1(2),x1(3),str1, 'FontSize',19);...

%a)

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

b=[4;8;-3];

determinantA = det(A)

%1.

x1=A\b

%2.

x2=inv(A)*b

%3.

x3=(b'/A')'

%(b)

x=linspace(-5,5,50);

y=linspace(-5,5,50);

z=linspace(-5,5,50);

[X,Y]=meshgrid(x,y);

surf(X,Y,x1(3)*ones(size(X)));

hold on

surf(X,x1(2)*ones(size(X)),Y);

surf(x1(1)*ones(size(X)),X,Y);

hold off

xlabel('axis x');

ylabel('axis y');

zlabel('axis z');

title('Intersection 1');

str1='intersection point x';

text(x1(1),x1(2),x1(3),str1, 'FontSize',19);...

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