https://github.com/cran/pracma
Tip revision: 392ae21a013fb3f518e8f9eb8efb458a55a2eca2 authored by HwB on 09 April 2011, 00:00:00 UTC
version 0.3-0
version 0.3-0
Tip revision: 392ae21
polycnv.Rd
\name{polycnv}
\alias{polycnv}
\title{Multiplying Polynomials}
\description{
Multiply two polynomials given as vectors.
}
\usage{
polycnv(p, q)
}
\arguments{
\item{p, q}{vectors representing two polynomials}
}
\details{
Polynomial multiplication realized simply by multiplying and summing up
all the coefficients.
}
\value{
Vector representing a polynomial.
}
\note{
\code{conv} also realizes polynomial multiplication, through Fast Fourier
Transformation, with the drawback that small imaginary parts may evolve.
}
\seealso{
\code{conv}, \code{deconv}
}
\examples{
# Multiply x^2 + x + 1 with itself
polycnv(c(1, 1, 1), c(0, 1, 1, 1)) #=> 1 2 3 2 1
}
\keyword{ math }