com.numericalmethod.suanshu.analysis.function.polynomial.root
Class Quartic

java.lang.Object
  com.numericalmethod.suanshu.analysis.function.polynomial.root.Quartic

All Implemented Interfaces:

Solver

public class Quartic
extends java.lang.Object
implements Solver

This is a quartic equation solver.

Solve

ax⁴ + bx³ + cx² + dx + e = 0

See Also:

Wikipedia: Quartic equation

Nested Class Summary

static interface

Quartic.QuarticSolver This defines a quartic equation solver.

Nested classes/interfaces inherited from interface com.numericalmethod.suanshu.analysis.function.polynomial.root.Solver

Solver.RootFindingException, Solver.Type

Constructor Summary

Quartic()
Construct a quartic equation solver.

Quartic(Quartic.QuarticSolver solver)
Construct a quartic equation solver using a customized solver.

Method Summary

NumberList	solve(Polynomial polynomial) Solve ax4 + bx3 + cx2 + dx + e = 0
Solver.Type	type() Get the type of the solver.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Quartic

public Quartic(Quartic.QuarticSolver solver)

Construct a quartic equation solver using a customized solver.

Parameters:

solver - the implementation of QuarticSolver to use

Quartic

public Quartic()

Construct a quartic equation solver.

Method Detail

type

public Solver.Type type()

Description copied from interface: Solver

Get the type of the solver.

Specified by:

type in interface Solver

Returns:

the solver type

solve

public NumberList solve(Polynomial polynomial)

Solve

ax⁴ + bx³ + cx² + dx + e = 0

Specified by:

solve in interface Solver

Parameters:

polynomial - the quartic polynomial to be solved

Returns:

a list of all roots in Number

Throws:

java.lang.IllegalArgumentException - if the polynomial degree is not 4