summary.polynomial: Summary of a Polynomial

In polynom: A Collection of Functions to Implement a Class for Univariate Polynomial Manipulations

Summary of a Polynomial

Description

Summarize a polynomial by describing its “key” points.

Usage

## S3 method for class 'polynomial'
summary(object, ...)

Arguments

object	an object of class "polynomial".
...	Not used by this method.

Details

This is a method for the generic function summary.

Value

A list of class "summary.polynomial" (which has its own print method) containing information on zeros, stationary and inflexion points.

Examples

p <- polynomial(6:1)
p
## 6 + 5*x + 4*x^2 + 3*x^3 + 2*x^4 + x^5 
pz <- summary(p)
pz
## [1] -1.49180+0.0000i -0.80579-1.2229i -0.80579+1.2229i
## [4]  0.55169-1.2533i  0.55169+1.2533i
## To retrieve the original polynomial from the zeros:
poly.calc(pz)
## Warning: imaginary parts discarded in coercion
## 6 + 5*x + 4*x^2 + 3*x^3 + 2*x^4 + x^5

polynom documentation built on April 11, 2022, 9:05 a.m.