polyprod: This function calculates parameters for the polynomials
Description
The function accepts two vectors with the parameters for the polynomials and returns
the vector of parameters after their multiplication. This can be especially useful,
when working with ARIMA models.
Usage
polyprod(x, y)
Value
The function returns a matrix with one column with the parameters for
the polynomial, starting from the 0-order.
Arguments
x
The vector of parameters of the first polynomial.
y
The vector of parameters of the second polynomial.