Polynomials {dse1} | 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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