`Hey,
Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.
clc
clear all
close all
format long
x=zeros(3,1);
A=[3,1,1;1,3,1;1,1,3];
B=[8;10;12];
AB=[A B];
n=size(A,1);
for i=1:n-1
P=-(AB(i+1:end,i)/AB(i,i));
AB(i+1:end,i:end)=AB(i+1:end,i:end)+P*AB(i,i:end);
end
for i=n:-1:1
x(i,:)=(AB(i,n+1:end)-AB(i,i+1:n)*x(i+1:n,:))/AB(i,i);
end
disp('x is');
disp(x);
Kindly revert for any queries
Thanks.
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