determ(8)

NAME
determ - determinant of polynomial matrix

CALLING SEQUENCE
res=determ(W [,k])

PARAMETERS

W   : real square polynomial matrix

k   : integer (upper bound for the degree of the determinant of W)

DESCRIPTION
returns the determinant of a real polynomial matrix
(computation made by FFT).

k is an integer larger than the actual degree of the determinant
of W.

The default value of k is the smallest power of 2 which is larger
than n*maxi(degree(W)).

Method: evaluate the determinant of W for the Fourier frequencies
and apply inverse FFT to the coefficients of the determinant.

SEE ALSO
det, detr, coffg

AUTHOR
F.D.