What is the wrong

ayah zaghlol

2021 5 17

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4 次查看（30 天）

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%% Jacobi Method
%% Solution of x in Ax=b using Jacobi Method
% * Initailize 'A' 'b' & intial guess 'x' %% A=[2.08 -1 0 0;-1 2.08 -1 0;0 -1 2.08 -1;0 0 -1 2.08]; b=[200.8;0.8;0.8;40.8]' 
b=[200.8;0.8;0.8;40.8]'
x=[0 0 0 0]'
n=size(x,1);
normVal=Inf;
%%
% * Tolerence for method
tol=1e-5;
itr=0;
%% Algorithm: Jacobi Method
%%
while normVal>tol
    xold=x;
    for i=1:n
        sigma=0;
        for j=1:n
            if j~=i
                sigma=sigma+A(i,j)*x(j);
            end
        end
        x(i)=(1/A(i,i))*(b(i)-sigma);
    end
    itr=itr+1;
    normVal=abs(xold-x);
end
%%
fprintf('Solution of the system is : \n%f\n%f\n%f\n%f in %d iterations',x,itr);

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DGM 2021-5-18

Are these occasional imploded posts a consequence of some issue with char encoding and user locale?

Walter Roberson 2021-5-18

I don't think so. You get bad formatting like that if you post code on the desktop without using the > button to create acode region, as the site supposes you have typed in conversational text.

(If you happen to post code on mobile, then the result depends upon whether the first character of the paragraph is space or not; if it is then the paragraph up to the next empty line is formatted as code.)

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