n = 5;				% n is the number of variables

A = zeros(n,n);			% A is first filled with zeros

B = zeros(n,1);			% B is filled with zeros

angle = pi/4;			% The angle is stored in radians

s = sin(angle);			% The coefficients are calculated

c = cos(angle);

A(1,1) = -c;			% Enter in the non-zero elements of A and B

A(1,5) = c;

A(2,1) = -s;

A(2,3) = -1;

A(2,5) = -s;

A(3,2) = -1;

A(3,4) = 1;

A(4,3) = 1;

A(5,4) = -1;

A(5,5) = -c;

B(4,1) = 10;			% The solution to A*X = B could be:

X= inv(A)*B			% This uses the inverse

X= A\B			% This uses Gaussian Elimination