Polynomials               package:dse1               R Documentation

_P_o_l_y_n_o_m_i_a_l _U_t_i_l_i_t_i_e_s

_D_e_s_c_r_i_p_t_i_o_n:

     Polynomial utility functions used by DSE.

_U_s_a_g_e:

         characteristic.poly(A)
         companion.matrix(A)
         poly.value(coef, z)
         polydet(A)
         polyprod(a, b)
         polysum(a, b)
         polyroot.det(A)

_A_r_g_u_m_e_n_t_s:

       A: An array representing a matrix polynomial.

       B: An array representing a matrix polynomial.

       a: An array representing a matrix polynomial.

       b: An array representing a matrix polynomial.

    coef: Coefficients of a polynomial.

       z: Value at which the polynomial is to be evaluated.

_D_e_t_a_i_l_s:

     These are utility functions used in some ARMA model calculations
     such as root and stability calculations.

_V_a_l_u_e:

     depends

_S_e_e _A_l_s_o:

     `polyroot' `roots' `stability'

