Eigen Values and Eigen Vectors Matlab

Question

I have a matrix A

A = [ 124.6,95.3,42.7 ; 95.3,55.33,2.74 ; 42.7,2.74,33.33 ]

The eigenvalues and vectors:

[V,D] =         


        

Answer 1

To compute all dot products between columns of V:

M = squeeze(sum(bsxfun(@times, conj(V), permute(V, [1 3 2]))));

The columns of V (eigenvectors) will be orthogonal if the above M is diagonal.