calculate hessian normal form in matlab

main.m
% Define the coefficients of the plane equation
a = 2; b = 3; c = 4; d = 5;

% Calculate the length of the normal vector
length_norm = sqrt(a^2+b^2+c^2);

% Calculate the Hessian normal form coefficients
coeff_hnf = [a/length_norm, b/length_norm, c/length_norm, d/length_norm];
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