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dse (version 2020.2-1)

Polynomials: Polynomial Utilities

Description

Polynomial utility functions used by DSE.

Usage

characteristicPoly(a)
    companionMatrix(a)
    polyvalue(coef, z)
    polydet(a)
    polyprod(a, b)
    polysum(a, b)
    polyrootDet(a)

Arguments

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.

Value

depends

Details

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

See Also

polyroot roots stability