discriminant

discriminant
1. noun
An expression that gives information about the roots of a polynomial; for example, the expression D = b - 4ac determines whether the roots of the quadratic equation ax + bx + c = 0 are real and distinct (D > 0), real and equal (D = 0) or complex (D < 0).
Serving to discriminate.

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  • discriminant — discriminant, ante [ diskriminɑ̃, ɑ̃t ] adj. et n. m. • 1877; lat. discriminare, de discrimen « point de séparation » 1 ♦ Didact. Qui établit une séparation, une discrimination. « Nous n avons plus aujourd hui la barricade discriminante » (Péguy) …   Encyclopédie Universelle

  • discriminant — DISCRIMINÁNT, Ă, discriminanţi, te, adj., s.m. 1. adj. (Rar) Discriminatoriu. 2. s.m. Expresie matematică formată din coeficienţii unei ecuaţii de gradul doi. – Din fr. discriminant. Trimis de LauraGellner, 16.06.2004. Sursa: DEX 98 … …   Dicționar Român

  • discriminant — discriminant, ante (entrée créée par le supplément) (di skri mi nan, nan t ) adj. Terme didactique. Qui établit une séparation entre deux termes.    S. m. Terme de mathématique. Si on différentie une forme à k variables, le résultant de ces k… …   Dictionnaire de la Langue Française d'Émile Littré

  • Discriminant — Dis*crim i*nant, n. [L. discriminans, p. pr. of discriminare.] (Math.) The eliminant of the n partial differentials of any homogenous function of n variables. See {Eliminant}. [1913 Webster] …   The Collaborative International Dictionary of English

  • discriminant — [dis krim′ənənt] n. Math. an expression whose value or sign is used to classify functions …   English World dictionary

  • Discriminant — In algebra, the discriminant of a polynomial is an expression which gives information about the nature of the polynomial s roots. For example, the discriminant of the quadratic polynomial is Here, if Δ > 0, the polynomial has two real roots,… …   Wikipedia

  • Discriminant — Incidence du signe du discriminant sur les racines de l équation du second degré à coefficients réels En mathématiques, le discriminant est une notion algébrique. Il est utilisé pour résoudre des équations du second degré. Il se généralise pour… …   Wikipédia en Français

  • discriminant — discriminantal /dis krim euh nan tl/, adj. /di skrim euh neuhnt/, n. Math. a relatively simple expression that determines some of the properties, as the nature of the roots, of a given equation or function. [1830 40; < L discriminant (s. of… …   Universalium

  • discriminant — diskriminantas statusas T sritis fizika atitikmenys: angl. discriminant vok. Diskriminant, m rus. дискриминант, m pranc. discriminant, m …   Fizikos terminų žodynas

  • discriminant — dis•crim•i•nant [[t]dɪˈskrɪm ə nənt[/t]] n. math. a relatively simple mathematical expression that determines some of the properties, as the nature of the roots, of a given equation or function • Etymology: 1830–40; < L discrīminant , s. of… …   From formal English to slang

  • Discriminant validity — describes the degree to which the operationalization is not similar to (diverges from) other operationalizations that it theoretically should not be similar to. Campbell and Fiske (1959) introduced the concept of discriminant validity within… …   Wikipedia

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