JSci.maths.symbolic
Class Evaluation

java.lang.Object
  JSci.maths.symbolic.Expression
      JSci.maths.symbolic.Evaluation

All Implemented Interfaces:

java.io.Serializable, Field.Member, Ring.Member, AbelianGroup.Member, Member

public class Evaluation
extends Expression

This class associates a JSci.maths.analysis.RealFunction to an Expression argument, to generate an Expression.
This class will substitute the Function class.
See the main() for example.

See Also:

Serialized Form

Constructor Summary

Evaluation(RealFunction n, Expression a)

Method Summary

Expression	differentiate(Variable x) Differentiation of the expression with respect to a variable
boolean	equals(java.lang.Object o)
Expression	evaluate() This method substitutes the variable with the variable values, if non-null; they can be Contants or other Expressions.
int	getPriority() Get the priority of the operator described by the expression.
java.lang.Object	getSet()
static void	main(java.lang.String[] args) An example
java.lang.String	toString()

Methods inherited from class JSci.maths.symbolic.Expression

add, difference, differentiate, divide, divide, inverse, inverse, multiply, negate, negative, power, product, product, rise, subtract, sum, sum

Methods inherited from class java.lang.Object

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

Constructor Detail

Evaluation

public Evaluation(RealFunction n,
                  Expression a)

Parameters:

n - the function; for example,

a - the argument

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getPriority

public int getPriority()

Description copied from class: Expression

Get the priority of the operator described by the expression. This is needed only for allowing toString() to generate the parenthesis when needed.

Specified by:

getPriority in class Expression

Returns:

the priority

differentiate

public Expression differentiate(Variable x)

Description copied from class: Expression

Differentiation of the expression with respect to a variable

Specified by:

differentiate in class Expression

Parameters:

x - the variable

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

getSet

public java.lang.Object getSet()

evaluate

public Expression evaluate()

Description copied from class: Expression

This method substitutes the variable with the variable values, if non-null; they can be Contants or other Expressions. Simplification is performed.

Specified by:

evaluate in class Expression

Returns:

the evaluated Expression. Can be a Constant.

main

public static void main(java.lang.String[] args)

An example