Polynomials {dse}

R Documentation

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.

Details

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

Value

depends

See Also

polyroot roots stability

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