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functional

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia, Hutchinson 0.06 sec.
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 variablesxj, j= 1, 2, …,n, a function of the formc1x1+c2x2+ ⋯ +cnxn(where thecjare 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.


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? Mentioned in ? References in classic literature
 
pungent epigram; the marvelous functional methods of converting a
` I have made careful examination, but there is no functional cause.
-- Inasmuch as peculiarities often appear under domestication in one sex and become hereditarily attached to that sex, the same fact probably occurs under nature, and if so, natural selection will be able to modify one sex in its functional relations to the other sex, or in relation to wholly different habits of life in the two sexes, as is sometimes the case with insects.
 
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