PolynomF (version 2.0-0)

polynom: Polynomial construction

Description

Functions to construct polynomial objects and check class membership

Usage

polynom(a = c(0, 1), ..., eps = 0)
polynomial(a = c(0, 1), ..., eps = 0)
as_polynom(a)
as.polynom(a)
is_polynom(a)
is.polynom(a)
polylist(...)
is_polylist(x)
is.polylist(x)
as_polylist(x)
as.polylist(x)

Arguments

a

A polynom object, or a numeric vector of coefficients (in "power series" order) or a vector object which can be coerced to one.

...

Additional arguments, currently ignored.

eps

A small non-negative tolerance to check for zero components.

x

An object of class "polylist", at least potentially.

Value

A polynomial object.

Examples

# NOT RUN {
(x <- polynomial())
(p <- polynomial(c(1, 5, 2, 2)/10))
plot(p, xlim = 0:1, ylim = 0:1)
P <- p
for(j in 1:7) {
  lines(P, col = j)
  P <- p(P)
}
(r <- solve(p-x))
segments(r, 0, r, p(r), lty = "dashed")
# }