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Version 1.9 Build 1556

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functional.fdf - Function

	Package	utility
	Module	functionals
	Tool	functional

Calculate the value and derivatives of the functional

Synopsis
fdf(x)

Arguments

x	in	argument values
		Allowed:	real
		Default:	[]

Returns
vector or array of doubles

Description

Calculate the value of the functional for the specified arguments, and the derivatives with respect to the parameters (taking any specified mask into account).

Example

- a:=dfs.gaussian1d()
- a.setparameters([2,1,3])
T
- a.fdf(1)
[[1:1,]
    2 1 0 0] 
- a.fdf([1,2])
[[1:2,]
    2       1        0        0
    1.46973 0.734867 0.905549 0.30185]