Determinant with Laplace rule

Question

Lorenzo Dursi 2017-1-30

0
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https://ww2.mathworks.cn/matlabcentral/answers/322523-determinant-with-laplace-rule

编辑： Jan 2017-1-30

Hi! I have this Matlab code to calculate the determinant of a matrix with Laplace rule. But it sholud there be an error, because it doesn't work. Could someone help me?

function d = Laplace(A)
[~,n] = size(A);
if n == 1
    d = A;
else
    d = 0;
    for j = 1:n
        A1 = A(2:n, [1:j-1, j+1:n]);
        d = d+(-1)^(j+1)*A(1,j)*Laplace(A1);
    end
end

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Jan 2017-1-30

Please explain "it does not work" with any details. Do you get an error message or does the result differ from your expectations? Did you use the debugger already to examine, what's going on?

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