Returns the value of the \sigma coefficient at the given point.

Namespace: Imsl.Math
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.0.0

Syntax

C#
double Sigma(
	double x,
	double t
)
Visual Basic (Declaration)
Function Sigma ( _
	x As Double, _
	t As Double _
) As Double
Visual C++
double Sigma(
	double x, 
	double t
)

Parameters

x
Type: System..::.Double
A double scalar, the point in space at which \sigma is to be evaluated.
t
Type: System..::.Double
A double scalar, the time point at which \sigma is to be evaluated.

Return Value

A double scalar, the value of \sigma at (x,t).

Remarks

Time dependency of \sigma can be controlled via method SetTimeDependence. Use of this method will usually yield a more efficient algorithm because some finite element matrices do not have to be reassembled for each t value.

See Also