"Muhammad Ali" wrote in message <firstname.lastname@example.org>... > i have a characteristic polynomial equation (M = (s^4) + (0.6*s^3) + (0.65*s^2) + (0.6*s) + 0.006) i need to change this matrix form.... dont know which codes to use - - - - - - - - - A characteristic polynomial uniquely determines the eigenvalues of a matrix and nothing more. To find a corresponding matrix requires a knowledge of its eigenvectors as well. Any arbitrary set of eigenvectors combined with the given eigenvalues would give you a matrix which possesses that characteristic polynomial.
In other words, you can't find the matrix if you only know its characteristic polynomial. That isn't enough information.