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  • GetValueAndDerivative Method

SymbolicMathGetValueAndDerivative Method

Extreme Optimization Numerical Libraries for .NET Professional
Creates a function of one variable that represents the derivative of the specified function of one variable.

Namespace:  Extreme.Mathematics
Assembly:  Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.1
Syntax

C#
VB
C++
F#
Copy
public static FunctionWithDerivative GetValueAndDerivative(
	Expression<Func<double, double>> targetFunction
)
Public Shared Function GetValueAndDerivative ( 
	targetFunction As Expression(Of Func(Of Double, Double))
) As FunctionWithDerivative
public:
static FunctionWithDerivative^ GetValueAndDerivative(
	Expression<Func<double, double>^>^ targetFunction
)
static member GetValueAndDerivative : 
        targetFunction : Expression<Func<float, float>> -> FunctionWithDerivative 

Parameters

targetFunction
Type: System.Linq.ExpressionsExpressionFuncDouble, Double
A lambda expression that represents a function of one variable.

Return Value

Type: FunctionWithDerivative
A delegate that represents a function of one variable that represents the numerical derivative of targetFunction
Exceptions

ExceptionCondition
ArgumentNullExceptiontargetFunction is .
Remarks

The derivative is calculated symbolically from the supplied lambda expression. The expression must not contain loops or blocks. If functions are encountered for which no symbolic derivative is available, a numerical approximation is used.

See Also

Reference

SymbolicMath Class
Extreme.Mathematics Namespace

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