SymbolicMath.GetFunctionAndGradient Method
Returns a delegate that symbolically evaluates the gradient and returns the value of a multivariate function.
DefinitionPermalink
Namespace: Numerics.NET
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.1.0
C#
A delegate that represents a multivariate function returning a vector in its second argument.
Assembly: Numerics.NET (in Numerics.NET.dll) Version: 9.1.0
public static Func<Vector<double>, Vector<double>, double> GetFunctionAndGradient(
Expression<Func<Vector<double>, double>> function
)
ParametersPermalink
- function Expression<Func<Vector<Double>, Double>>
- A lambda expression that represents a multivariate function.
Return ValuePermalink
Func<Vector<Double>, Vector<Double>, Double>A delegate that represents a multivariate function returning a vector in its second argument.
RemarksPermalink
The partial derivatives are 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.