poly                 package:signal                 R Documentation

_P_o_l_y_n_o_m_i_a_l _g_i_v_e_n _r_o_o_t_s

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

     Coefficients of a polynomial when roots are given or the
     characteristic polynomial of a matrix.

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

     poly(x)

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

       x: a vector or matrix. For a vector, it specifies the roots of
          the polynomial. For a matrix, the characteristic polynomial
          is found. 

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

     An array of the coefficients of the polynomial in order from
     highest to lowest polynomial power.

_A_u_t_h_o_r(_s):

     Original Octave version by Kurt Hornik. Conversion to R by Tom
     Short.

_R_e_f_e_r_e_n_c_e_s:

     Octave Forge <URL: http://octave.sf.net>

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

     'polyval', 'roots', 'conv'

_E_x_a_m_p_l_e_s:

     poly(c(1,-1))
     poly(roots(1:3))
     poly(matrix(1:9,3,3))

