QUADRATIC

quadratic

(adjective) involving the second and no higher power of a quantity or degree; “quadratic equation”

quadratic, quadratic polynomial

(noun) a polynomial of the second degree

Source: WordNet® 3.1


Etymology

Adjective

quadratic (not comparable)

square-shaped

(mathematics) of a polynomial, involving the second power (square) of a variable but no higher powers, as \(ax^2 + bx + c\).

(mathematics) of an equation, of the form \( ax^2 + bx + c = 0\).

(mathematics) of a function, of the form \( y = ax^2 + bx + c \).

Noun

quadratic (plural quadratics)

(mathematics) A quadratic polynomial, function or equation.

Usage notes

Not to be confused with quartic (“degree four”). Both derive ultimately from Proto-Indo-European *kʷetwóres (“four”), with quadratic coming from “four-sided”, hence “square, two-dimensional, degree two”.

Source: Wiktionary


Quad*rat"ic, a. Etym: [Cf. F. quadratique.]

1. Of or pertaining to a square, or to squares; resembling a quadrate, or square; square.

2. (Crystallog.)

Definition: Tetragonal.

3. (Alg.)

Definition: Pertaining to terms of the second degree; as, a quadratic equation, in which the highest power of the unknown quantity is a square.

Source: Webster’s Unabridged Dictionary 1913 Edition



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