dse: Polynomials – R documentation

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Polynomials

Polynomial Utilities

Polynomial utility functions used by DSE.

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

`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.

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

depends