Man Scilab

determ
Scilab Function

determ - determinant of polynomial matrix

Calling Sequence

res=determ(W [,k])

Parameters

Description

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

res=determ(W [,k]) 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.

Examples


s=poly(0,'s');
w=s*rand(10,10);
determ(w)
det(coeff(w,1))*s^10
 
  

See Also

det ,   detr ,   coffg ,  

Author

F.D.

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