411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a0ny
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A = EVector EValue EVectorT
Copy/Paste into the octave window
% Matrix 2x2 -------------
clear, clc
A = round(15*randn(2)); %% A matrix 2x2
A = A'*A %% A symetric matrix
% Eigenvalues Eigenvectors
[Evectors,Evalues] = eigs(A);
A = Evectors * Evalues * Evectors'
%%
B = EVector EValue EVectorT
Copy/Paste into the octave window
% Matrix 3x3 ---------------------
clear, clc
B = round(15*randn(3)); %% A matrix 3x3
B = B'*B %% A symetric matrix
% Eigenvalues Eigenvectors
[Evectors,Evalues] = eigs(B);
B = Evectors * Evalues * Evectors'
%%