Package 'numericalecon'

Sum of two polynomials

Description

It sums two objects of class Quadra

Usage

addQuadra(Q1,Q2)
Q1%+%Q2

Arguments

Q1	An object of class Quadra.
Q2	An object of class Quadra.

Examples

P1 <- Quadra(1,2,3)
P2 <- Quadra(.1,-2,1.3)
P1

---

Plot second order polynomial

Description

It prints the polynomial and shows the min or max and the zeros.

Usage

## S3 method for class 'Quadra'
plot(x,from=NULL,to=NULL, ...)

Arguments

x	Object of class Quadra.
from	min(x) on the plot
to	max(x) on the plot
...	Argument for other type of objects

Examples

P1 <- Quadra(1,2,3)
plot(P1)

---

Print methods for Quadra

Description

Print results of different methods applied to Quadra Objects

Usage

## S3 method for class 'Quadra'
print(x, ...)
## S3 method for class 'zeros'
print(x, ...)
## S3 method for class 'solveP.Quadra'
print(x, ...)

Arguments

x	Onject of class Quadra.
...	Argument for other type of objects

Examples

P1 <- Quadra(1,2,3)
print(P1)
print(zeros(P1))
print(solveP(P1))

---

Object of class Quadra

Description

Create an object of class Quadra

Usage

Quadra(a,b,c)

Arguments

a	Coefficient A (see details)
b	Coefficient B (see details)
c	Coefficient C (see details)

Details

The polynomial is $f(x)=Ax^2+Bx+C$.

Examples

P1 <- Quadra(1,2,3)
P1

---

Roots of a polynomial

Description

Computes the roots of a second order polynomial

Usage

## S3 method for class 'Quadra'
solveP(obj, ...)

Arguments

obj	An object of class Quadra.
...	Other arguments when solve is applied to another class object

Examples

P1 <- Quadra(1,2,3)
solveP(P1)

---

Summary for objects of class Quadra

Description

Returns characteristics of the polynomial

Usage

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

Arguments

object	An object of class Quadra
...	Argument for other type of objects

Examples

P1 <- Quadra(1,2,3)
summary(P1)

---

Zeros of a second order polynomial

Description

Computes the zeros of polynomials of class Quadra

Usage

## S3 method for class 'Quadra'
zeros(object, ...)

Arguments

object	An object os class Quadra
...	Other arguments when zeros is applied to an other class object

Examples

P1 <- Quadra(1,2,3)
zeros(P1)

---