Write a program in MATLAB to implement the algorithm of Gaussian Elimination Method.
Mandatory implementation steps
Write a program in MATLAB to implement the algorithm of Gaussian Elimination Method.
Mandatory implementation steps
Solution
function [A ] = GE(A)
A = [1 9 4 5 ;
-11 -2 3 0 ;
0 -6 5 4 ;
3 5 7 -3;
]
n=4
[ cv Ir] = max(abs( A) )
% [ v I] = max(abs( A') )
[ rv Ic] = max(cv)
row= Ir(Ic)
temp = A(1, : )
A(1, : ) = A( row, :)
A( row, :) = temp
for i = 1:n-1
m = -A(i+1:n,i)/A(i,i);
A(i+1:n,:) = A(i+1:n,:) + m*A(i,:);
% b(i+1:n,:) = b(i+1:n,:) + m*b(i,:);
end;
A
return