Functional (disambiguation) definition of Functional (disambiguation) in the Free Online Encyclopedia.

functional

1. Psychol

a. relating to the purpose or context of a behaviour

b. denoting a psychosis such as schizophrenia assumed not to have a direct organic cause, like deterioration or poisoning of the brain

2. Maths a function whose domain is a set of functions and whose range is a set of functions or a set of numbers

functional [′fəŋk·shən·əl]

(computer science)

In a linear programming problem involving a set of variablesx_j, j= 1, 2, …,n, a function of the formc₁x₁+c₂x₂+ ⋯ +c_nx_n(where thec_jare constants) which one wishes to optimize (maximize or minimize, depending on the problem) subject to a set of restrictions.

(mathematics)

Any function from a vector space into its scalar field.

1.		functional - Working correctly.
2.		functional - Pertaining to functional programming.
3.		functional - higher-order function.

Functional

a mathematical concept originating in the calculus of variations, where it denotes a variable that depends on one or more functions or curves. Examples of functionals are the area bounded by a closed curve of a given length and the work of a force field along a curve. As functional analysis developed, the term “functional” acquired the more general sense of a numbervalued function defined on a linear space.

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