| polynomial {polynom} | R Documentation |
Construct, coerce to and test for polynomial objects.
polynomial(coef = c(0, 1)) as.polynomial(p) is.polynomial(p)
coef |
numeric vector, giving the polynomial coefficients in increasing order. |
p |
an arbitrary R object. |
polynomial constructs a polynomial from its coefficients,
i.e., p[1:k] specifies the polynomial
p[1] + p[2]* x + p[3]* x^2 + ... + p[k]* x^(k-1)
.
Internally, polynomials are simply numeric coefficient vectors of
class "polynomial". Several useful methods are available for
this class, such as coercion to character and function, extraction of
the coeeficients, printing and plotting.
as.polynomial tries to coerce its arguments to a polynomial.
is.polynomial tests whether its argument is a polynomial (in
the sense that it has class "polynomial".
polynomial(1:4) as.polynomial(c(1,0,3,0)) polynomial(c(2,rep(0,10),1))