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On this page
  • Overview
  • Functionality
  • Methods Summarized
  • Methods Detailed
  • addPolynomial(polynomial)
  • addTerm(coefficient, exponent)
  • findRoot(startValue, error, iterations)
  • getDerivative()
  • getDerivativeValue(x)
  • getValue(x)
  • multiplyByPolynomial(polynomial)
  • multiplyByTerm(coefficient, exponent)
  • setToZero()

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  1. Reference
  2. Extensions
  3. Server Plugins
  4. amortization

Polynomial

Overview

The Polynomial class provides a framework for representing and manipulating polynomials in one variable. It supports essential mathematical operations such as addition, multiplication, differentiation, and evaluation. The class is designed for single-threaded use.

Functionality

This class enables the addition of polynomials or individual terms, allowing for the construction of complex polynomial expressions. It supports multiplication with other polynomials or individual terms, making it versatile for algebraic operations. Additionally, users can find roots of a polynomial using Newton's method, which provides precision control through configurable error margins and iteration limits.

The class also offers methods to compute and retrieve the derivative of a polynomial. The derivative can be further evaluated at specific points to analyze its behavior. Users can reset the polynomial to zero when needed, providing a clean state for new calculations.

Methods Summarized

Type
Name
Summary

void

Adds another polynomial to this polynomial.

void

Adds a term to this polynomial.

Finds a root of this polynomial using Newton's method, starting from an initial search value, and with a given precision.

Returns a polynomial that holds the derivative of this polynomial.

Returns the value of the derivative of this polynomial in a certain point.

Returns the value of this polynomial in a certain point.

void

Multiplies this polynomial with another polynomial.

void

Multiples this polynomial with a term.

void

Sets this polynomial to zero.

Methods Detailed

addPolynomial(polynomial)

Adds another polynomial to this polynomial.

Parameters

Returns: void

Sample

// (x+1) + 2*(x+1)*x + 3*(x+1)*x^2 + 4*(x+1)*x^3
var eq = plugins.amortization.newPolynomial();
for (var i = 0; i < 4; i++)
{
	var base = plugins.amortization.newPolynomial();
	base.addTerm(1, 1);
	base.addTerm(1, 0);
	base.multiplyByTerm(1, i);
	base.multiplyByTerm(i + 1, 0);
	eq.addPolynomial(base);
}
application.output(eq.getValue(2));

addTerm(coefficient, exponent)

Adds a term to this polynomial.

Parameters

Returns: void

Sample

// (x+1) + 2*(x+1)*x + 3*(x+1)*x^2 + 4*(x+1)*x^3
var eq = plugins.amortization.newPolynomial();
for (var i = 0; i < 4; i++)
{
	var base = plugins.amortization.newPolynomial();
	base.addTerm(1, 1);
	base.addTerm(1, 0);
	base.multiplyByTerm(1, i);
	base.multiplyByTerm(i + 1, 0);
	eq.addPolynomial(base);
}
application.output(eq.getValue(2));

findRoot(startValue, error, iterations)

Finds a root of this polynomial using Newton's method, starting from an initial search value, and with a given precision.

Parameters

Sample

// Model the quadratic equation -x^2 + 4x + 0.6 = 0
var eq = plugins.amortization.newPolynomial();
eq.addTerm(-1, 2);
eq.addTerm(4, 1);
eq.addTerm(0.6, 0);
// Find the roots of the equation.
r1 = eq.findRoot(100, 1E-5, 1000);
r2 = eq.findRoot(-100, 1E-5, 1000);
application.output("eq(" + r1 + ")=" + eq.getValue(r1));
application.output("eq(" + r2 + ")=" + eq.getValue(r2));
// Find the minimum/maximum point by zeroing the first derivative.
var deriv = eq.getDerivative();
rd = deriv.findRoot(0, 1E-5, 1000);
application.output("Min/max point: " + rd);
application.output("Min/max value: " + eq.getValue(rd));
if (deriv.getDerivativeValue(rd) < 0) application.output("Max point.");
else application.output("Min point.");

getDerivative()

Returns a polynomial that holds the derivative of this polynomial.

Sample

// Model the quadratic equation -x^2 + 4x + 0.6 = 0
var eq = plugins.amortization.newPolynomial();
eq.addTerm(-1, 2);
eq.addTerm(4, 1);
eq.addTerm(0.6, 0);
// Find the roots of the equation.
r1 = eq.findRoot(100, 1E-5, 1000);
r2 = eq.findRoot(-100, 1E-5, 1000);
application.output("eq(" + r1 + ")=" + eq.getValue(r1));
application.output("eq(" + r2 + ")=" + eq.getValue(r2));
// Find the minimum/maximum point by zeroing the first derivative.
var deriv = eq.getDerivative();
rd = deriv.findRoot(0, 1E-5, 1000);
application.output("Min/max point: " + rd);
application.output("Min/max value: " + eq.getValue(rd));
if (deriv.getDerivativeValue(rd) < 0) application.output("Max point.");
else application.output("Min point.");

getDerivativeValue(x)

Returns the value of the derivative of this polynomial in a certain point.

Parameters

Sample

// Model the quadratic equation -x^2 + 4x + 0.6 = 0
var eq = plugins.amortization.newPolynomial();
eq.addTerm(-1, 2);
eq.addTerm(4, 1);
eq.addTerm(0.6, 0);
// Find the roots of the equation.
r1 = eq.findRoot(100, 1E-5, 1000);
r2 = eq.findRoot(-100, 1E-5, 1000);
application.output("eq(" + r1 + ")=" + eq.getValue(r1));
application.output("eq(" + r2 + ")=" + eq.getValue(r2));
// Find the minimum/maximum point by zeroing the first derivative.
var deriv = eq.getDerivative();
rd = deriv.findRoot(0, 1E-5, 1000);
application.output("Min/max point: " + rd);
application.output("Min/max value: " + eq.getValue(rd));
if (deriv.getDerivativeValue(rd) < 0) application.output("Max point.");
else application.output("Min point.");

getValue(x)

Returns the value of this polynomial in a certain point.

Parameters

Sample

// Model the quadratic equation -x^2 + 4x + 0.6 = 0
var eq = plugins.amortization.newPolynomial();
eq.addTerm(-1, 2);
eq.addTerm(4, 1);
eq.addTerm(0.6, 0);
// Find the roots of the equation.
r1 = eq.findRoot(100, 1E-5, 1000);
r2 = eq.findRoot(-100, 1E-5, 1000);
application.output("eq(" + r1 + ")=" + eq.getValue(r1));
application.output("eq(" + r2 + ")=" + eq.getValue(r2));
// Find the minimum/maximum point by zeroing the first derivative.
var deriv = eq.getDerivative();
rd = deriv.findRoot(0, 1E-5, 1000);
application.output("Min/max point: " + rd);
application.output("Min/max value: " + eq.getValue(rd));
if (deriv.getDerivativeValue(rd) < 0) application.output("Max point.");
else application.output("Min point.");

multiplyByPolynomial(polynomial)

Multiplies this polynomial with another polynomial.

Parameters

Returns: void

Sample

// Model the quadratic equation (x+1)*(x+2) = 0
var eq = plugins.amortization.newPolynomial();
eq.addTerm(1, 1);
eq.addTerm(1, 0);
var eq2 = plugins.amortization.newPolynomial();
eq2.addTerm(1, 1);
eq2.addTerm(2, 0);
eq.multiplyByPolynomial(eq2);
// Find the roots of the equation.
r1 = eq.findRoot(100, 1E-5, 1000);
r2 = eq.findRoot(-100, 1E-5, 1000);
application.output("eq(" + r1 + ")=" + eq.getValue(r1));
application.output("eq(" + r2 + ")=" + eq.getValue(r2));

multiplyByTerm(coefficient, exponent)

Multiples this polynomial with a term.

Parameters

Returns: void

Sample

// (x+1) + 2*(x+1)*x + 3*(x+1)*x^2 + 4*(x+1)*x^3
var eq = plugins.amortization.newPolynomial();
for (var i = 0; i < 4; i++)
{
	var base = plugins.amortization.newPolynomial();
	base.addTerm(1, 1);
	base.addTerm(1, 0);
	base.multiplyByTerm(1, i);
	base.multiplyByTerm(i + 1, 0);
	eq.addPolynomial(base);
}
application.output(eq.getValue(2));

setToZero()

Sets this polynomial to zero.

Returns: void

Sample

var eq = plugins.amortization.newPolynomial();
eq.addTerm(2, 3);
application.output(eq.getValue(1.1));
eq.setToZero();
application.output(eq.getValue(1.1));

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polynomial ;

coefficient ;

exponent ;

startValue ;

error ;

iterations ;

Returns: The root value after the specified number of iterations or as soon as the error condition is satisfied. Returns Double.NaN if the derivative was zero during the computation.

Returns: A polynomial representing the derivative of this polynomial.

x ;

Returns: The value of the derivative of this polynomial at the specified point.

x ;

Returns: The value of this polynomial at the specified point.

polynomial ;

coefficient ;

exponent ;

Polynomial
Number
Number
Number
Number
Number
Number
Polynomial
Number
Number
Number
Number
Polynomial
Number
Number
Number
Polynomial
Number
Number
addPolynomial(polynomial)
addTerm(coefficient, exponent)
findRoot(startValue, error, iterations)
getDerivative()
getDerivativeValue(x)
getValue(x)
multiplyByPolynomial(polynomial)
multiplyByTerm(coefficient, exponent)
setToZero()