## Eigenvalues of a 3 by 3 symmetric matrix

http://math.fullerton.edu/mathews/n2003/...odMod.html

Quote:it takes many iterations and becomes time consuming.but the good news is that it can be sped up and then it is probably the best method suiting your needs. one trick is to try and transform the original matrix to get as many zeros as possible. then the matrix mutiplications will be done faster.