given matrix a and an eigen vector of a , compute the corresponding eigen value . this is the rayleigh quotient . xtax / xtx concode_field_sep PlaceHolder placeHolder concode_field_sep Eigenpair computeEigenVector concode_elem_sep DenseMatrix64F createMatrixV concode_elem_sep Eigenpair dominantEigenpair concode_elem_sep double[] boundLargestEigenValue concode_elem_sep DenseMatrix64F createMatrixD