JSci.maths.symbolic
Class Function

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

All Implemented Interfaces:

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

public class Function
extends Expression

A function like sin(x), exp(x) or sqrt(x).
This will be substituted by Evaluation.

See Also:

Serialized Form

Field Summary

static java.lang.String	ACOS
static java.lang.String	ACOSH
static java.lang.String	ASIN
static java.lang.String	ASINH
static java.lang.String	ATAN
static java.lang.String	ATANH
static java.lang.String	COS
static java.lang.String	COSH
static java.lang.String	EXP
static java.lang.String	LOG
static java.lang.String	SIN
static java.lang.String	SINH
static java.lang.String	SQRT
static java.lang.String	TAN
static java.lang.String	TANH

Constructor Summary

Function(java.lang.String 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()
java.lang.String	toString()

Methods inherited from class JSci.maths.symbolic.Expression

add, difference, differentiate, divide, divide, inverse, inverse, main, 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

Field Detail

SIN

public static final java.lang.String SIN

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Constant Field Values

COS

public static final java.lang.String COS

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Constant Field Values

TAN

public static final java.lang.String TAN

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Constant Field Values

ASIN

public static final java.lang.String ASIN

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Constant Field Values

ACOS

public static final java.lang.String ACOS

See Also:

Constant Field Values

ATAN

public static final java.lang.String ATAN

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Constant Field Values

SINH

public static final java.lang.String SINH

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Constant Field Values

COSH

public static final java.lang.String COSH

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Constant Field Values

TANH

public static final java.lang.String TANH

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Constant Field Values

ASINH

public static final java.lang.String ASINH

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Constant Field Values

ACOSH

public static final java.lang.String ACOSH

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Constant Field Values

ATANH

public static final java.lang.String ATANH

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Constant Field Values

EXP

public static final java.lang.String EXP

See Also:

Constant Field Values

LOG

public static final java.lang.String LOG

See Also:

Constant Field Values

SQRT

public static final java.lang.String SQRT

See Also:

Constant Field Values

Constructor Detail

Function

public Function(java.lang.String n,
                Expression a)

Parameters:

n - the name (type) of the function; for example, Function.SIN

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.