signal (version 0.7-6)

polyval: Evaluate a polynomial

Description

Evaluate a polynomial at given points.

Usage

polyval(coef, z)

Arguments

coef
coefficients of the polynomial, defined in decreasing power.
z
the points at which to evaluate the polynomial.

Value

An array of length(z), the polynomial evaluated at each element of z.

See Also

poly, roots

Examples

polyval(c(1, 0, -2), 1:3)  # s^2 - 2