addrow addrow condition_number extract_cols glex_dtuples LU_solve operator* simplex_method singular_values subvector_elements tridiag_eigen_solve

matrix tridiag_eigen_solve ( const vector &  v1, const vector &  v2  ) [inline] Function that computes the eigenvalues and eigenvectors of a symmetric tri-diagonal matrix. Author: Rochan R. Upadhyay Parameters: v1 : Vector for the diagonal entries of the tri-diagonal matrix v2 : Vector for the sub and super diagonals of the symmetric tri-diagonal matrix Function returns a matrix. The first row contains all the eigenvalues. The subsequent rows contain the eigenvectors in the same sequence as eigenvalues in the first row. For example the second row contains the eigenvector corresponding to the first eigenvalue in the first row. Date: 10/12/2010