org.jscience.mathematics.analysis.expressions.symbolic
Class Diff

java.lang.Object
  org.jscience.mathematics.analysis.expressions.OperatorExpression
      org.jscience.mathematics.analysis.expressions.BinaryOperator
          org.jscience.mathematics.analysis.expressions.symbolic.Diff

All Implemented Interfaces:

java.io.Serializable, Expression, JavaExpressible, XMLExpressible

public class Diff
extends BinaryOperator

Class representing the derivative of an Expression objects.
Example of use:

 Expression e1 = ...;
 NamedDataExpression e2 = ...;
 Expression e3 = new Diff( e1, e2 );
 




See Also:
Expression, 
NamedDataExpression, 
BinaryOperator, 
Serialized Form






Field Summary

 
Fields inherited from class org.jscience.mathematics.analysis.expressions.BinaryOperator
deriv, evalValid, evalValue, secondOperand, valid
 
Fields inherited from class org.jscience.mathematics.analysis.expressions.OperatorExpression
firstOperand
 



Constructor Summary
Diff(Expression op1,
     NamedDataExpression op2)



          Creates a Diff object that represents the derivative of an
 Expression objects with respect to a NamedDataExpression.
 



Method Summary




 boolean
equals(java.lang.Object e)



          DOCUMENT ME!



 double
eval()



          DOCUMENT ME!



 boolean
isDifferentiable()



          DOCUMENT ME!



 boolean
isExpandable()



          DOCUMENT ME!



 Expression
optimize()



          DOCUMENT ME!



 Expression
replace(Expression a,
        Expression b)



          DOCUMENT ME!



 java.lang.String
toJava()



          DOCUMENT ME!



 java.lang.String
toString()



          DOCUMENT ME!



 java.lang.String
toTaylorMap()



          DOCUMENT ME!



 java.lang.String
toXML()



          DOCUMENT ME!


 
Methods inherited from class org.jscience.mathematics.analysis.expressions.BinaryOperator
diff, getElements, getSecondOperand, resetNumDiff, resetNumEval, setIndex, setNumberOfIndependents, setSecondOperand
 
Methods inherited from class org.jscience.mathematics.analysis.expressions.OperatorExpression
contains, factor, getFirstOperand, isolate, isolate, setFirstOperand
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 





Constructor Detail



Diff
public Diff(Expression op1,
            NamedDataExpression op2)

Creates a Diff object that represents the derivative of an
 Expression objects with respect to a NamedDataExpression.


Parameters:
op1 - An Expression object.
op2 - NamedDataExpression representing the independent variable.





Method Detail



eval
public double eval()

DOCUMENT ME!



Returns:
DOCUMENT ME!





isDifferentiable
public boolean isDifferentiable()

DOCUMENT ME!


Specified by:
isDifferentiable in interface Expression
Overrides:
isDifferentiable in class BinaryOperator



Returns:
DOCUMENT ME!
See Also:
Expression.isDifferentiable()





isExpandable
public boolean isExpandable()

DOCUMENT ME!


Specified by:
isExpandable in interface Expression
Overrides:
isExpandable in class BinaryOperator



Returns:
DOCUMENT ME!
See Also:
Expression.isExpandable()





replace
public Expression replace(Expression a,
                          Expression b)

DOCUMENT ME!


Parameters:
a - DOCUMENT ME!
b - DOCUMENT ME!
Returns:
DOCUMENT ME!





equals
public boolean equals(java.lang.Object e)

DOCUMENT ME!


Overrides:
equals in class java.lang.Object


Parameters:
e - DOCUMENT ME!
Returns:
DOCUMENT ME!





toString
public java.lang.String toString()

DOCUMENT ME!


Overrides:
toString in class java.lang.Object



Returns:
DOCUMENT ME!





toJava
public java.lang.String toJava()

DOCUMENT ME!



Returns:
DOCUMENT ME!





toTaylorMap
public java.lang.String toTaylorMap()

DOCUMENT ME!


Specified by:
toTaylorMap in interface Expression
Overrides:
toTaylorMap in class BinaryOperator



Returns:
DOCUMENT ME!





optimize
public Expression optimize()

DOCUMENT ME!



Returns:
DOCUMENT ME!





toXML
public java.lang.String toXML()

DOCUMENT ME!



Returns:
DOCUMENT ME!