https://github.com/cran/dse
Tip revision: ab08892d097753cdf4449136af92b9e9fb89871c authored by Paul Gilbert on 01 December 2009, 00:00:00 UTC
version 2009.12-1
version 2009.12-1
Tip revision: ab08892
Polynomials.Rd
\name{Polynomials}
\alias{characteristicPoly}
\alias{companionMatrix}
\alias{polyvalue}
\alias{polydet}
\alias{polyprod}
\alias{polysum}
\alias{polyrootDet}
\title{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{
\item{a}{An array representing a matrix polynomial.}
\item{b}{An array representing a matrix polynomial.}
\item{coef}{Coefficients of a polynomial.}
\item{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.}
\seealso{
\code{\link{polyroot}}
\code{\link{roots}}
\code{\link{stability}}
}
\concept{DSE}
\keyword{ts}