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

Class QuadraticRoot

java.lang.Object

com.numericalmethod.suanshu.analysis.function.polynomial.root.QuadraticRoot

All Implemented Interfaces:

PolyRootSolver, java.io.Serializable

public class QuadraticRoot
extends java.lang.Object
implements PolyRootSolver

This is a solver for finding the roots of a quadratic equation, \(ax^2 + bx + c = 0\). The roots are: \[ \frac{-b}{2a} \pm \frac{\sqrt{b^2-4ac}}{2a} \]

See Also:

Wikipedia: QuadraticRoot equation, Serialized Form

Constructor Summary

Constructors

Constructor and Description
QuadraticRoot()

Method Summary

Modifier and Type	Method and Description
java.util.List<java.lang.Number>	solve(Polynomial polynomial) Solve \(ax^2 + bx + c = 0\).

Methods inherited from class java.lang.Object

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

Constructor Detail

QuadraticRoot

public QuadraticRoot()

Method Detail

solve

public java.util.List<java.lang.Number> solve(Polynomial polynomial)

Solve \(ax^2 + bx + c = 0\).

Specified by:

solve in interface PolyRootSolver

Parameters:

polynomial - a quadratic equation to be solved

Returns:

the roots of the quadratic equation

Throws:

java.lang.IllegalArgumentException - if the polynomial degree is not 2