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MassChangeAfterExponentialEquilibrationForPlaneSheetEvaluateUnitStepAndDerivativesWrtReducedVariables Method

Evaluates the response of a unit step in dependence of the reduced variables and returns derivatives.

Namespace: Altaxo.Calc.FitFunctions.Diffusion
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3448.0 (4.8.3448.0)
Syntax
C#
Copy
public static (double functionValue, double derivativeWrtRv, double derivativeWrtRz) EvaluateUnitStepAndDerivativesWrtReducedVariables(
	double rv,
	double rz
)

Parameters

rv  Double
Reduced variable rv = D*t/l², where D is the diffusion coefficient, t is the time and l is the half thickness of the plane sheet.
rz  Double
Reduced variable rz = D*τ/l², where D is the diffusion coefficient, τ is the time constant of the outer concentration change, and l is the half thickness of the plane sheet.

Return Value

ValueTupleDouble, Double, Double
A tuple containing the function value and its derivatives with respect to rv and rz.
See Also