Returns the function value and its derivate at a given argument.
Syntax
Spline.ValueAt (
arg As Double, '
[derivate As Double] '
) As Double
Parameters
arg
[in, optional] Double
derivate
[in, optional] Double
Remarks
The ValueAt method calculates the function value and its derivate at the given argument
specified by the arg parameter. The arg parameter can be any value
in tolerance range for a spline function (i.e. the B value should be positive for the B-H curve
of soft magnet steel and so on).
The calculated value is returned as a function result. If the optional output parameter derivate
is given, it takes the value of function derivate.