Jacobi Iterations Coding Question

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Kaylene Widdoes
Kaylene Widdoes on 6 Oct 2015
Answered: Walter Roberson on 6 Oct 2015
Here's what I have so far with my code. It says that the function file is not available in this context. I am wondering what I have to put where as far as different function files and what not to make it run. Any help is appreciated.
% HW 3 - Problem 2
A=[4 1 -1; 1 -5 -1; 2 -1 -6];
B=[13 -8 -2];
P=[0,0,0];
delta=(1*(10^(-10)));
max1=10;
counter = 0;
function X=jacobi(A,B,P,delta, max1)
for k=1:max1
for j=1:N
X(j)=(B(j)-A(j,[1:j-1,j+1:N])*P([1:j-1,j+1:N]))/A(j:j);
counter = counter + 1;
end
err=abs(norm(X'-P));
relerr=err/(norm(X)+eps);
p=X';
if (err<delta)|(relerr<delta)
break
end
end
X=X'

Answers (1)

Walter Roberson
Walter Roberson on 6 Oct 2015
As the first line of your code, add
function HW2P3
where HW2P3 must match the name of the .m file you have the code stored in.

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