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(kwŏ-drăt′ĭk)
Of, relating to, or containing quantities of the second degree.

(kwɒˈdrætɪk) maths
n
(Mathematics) Also called: quadratic equation an equation containing one or more terms in which the variable is raised to the power of two, but no terms in which it is raised to a higher power
(Mathematics) Also: quadratical of or relating to the second power
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

(kwɒˈdræt ɪk)

1. Algebra. involving the square and no higher power of the unknown quantity; of the second degree.
n.
2. a quadratic polynomial or equation.
[1650–60]

(kwŏ-drăt′ĭk)
Relating to a mathematical expression containing a term of the second degree, such as x2 + 2. ♦ A quadratic equation is an equation having the general form ax2 + bx + c = 0, where a, b, and c are constants. ♦ The quadratic formula is x = [-b ± √(b2 - 4ac)]/2a It is important in algebra, where it is used to calculate the roots of quadratic equations.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 quadratic - an equation in which the highest power of an unknown quantity is a squarequadratic equationequation - a mathematical statement that two expressions are equal 2 quadratic - a polynomial of the second degreequadratic polynomialmultinomial, polynomial - a mathematical function that is the sum of a number of terms Adj. 1 quadratic - of or relating to or resembling a square; "quadratic shapes" 2 quadratic - of or relating to the second power; "quadratic equation"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in classic literature ?
Furthermore, it is admitted that never, never, in a million lifetimes, could Michael have demonstrated a proposition in Euclid or solved a quadratic equation.
For five weeks I crammed, until simultaneous quadratic equations and chemical formulas fairly oozed from my ears.
Then he got out note-book and algebra and lost himself in quadratic equations, while the hours slipped by, and the stars dimmed, and the gray of dawn flooded against his window.
Nothing to do with quadratic equations but rather his own (quite compelling) theory involving Roz Huntley (that's Huntley with an H!).
He covers integers, polynomials, lines, and congruences; quadratic congruences and quadratic equations; and cubic equations and elliptic curves.
Hereafter, real leaf area (LA) determined by image processing, was modeled in function of L or W and/or LW through the models: linear (LA=a+bx), quadratic (LA=a+bx+c[x.sup.2]), and power (LA=a[x.sup.b]), wherein these models, x is the linear dimension of the leaf (L, W or LW).
We consider a continuous-time optimal consumption and portfolio selection problem of an agent who has a quadratic utility function and faces a subsistence consumption constraint.
The standard linear three-node (n = 3) and quadratic six-node (n = 6) triangular elements are employed in the present research.
Polynomial contrast were conducted to determine linear and quadratic effects of inclusion level or adaptation duration.
The process is demonstrated for both linear and quadratic functions.
For example, a quadratic 2D potential is modeled in coupled semiconductor quantum dots as quantum gates by the author of  as V(x,y) = (m[[omega].sup.2.sub.0]/2)[(l/4[a.sup.2])[([x.sup.2] - [a.sup.2]).sup.2] + [y.sup.2]], where [[omega].sub.0] is the confining frequency, one for each dot, x and y are coordinates, m is the effective mass of electron, and a is the half distance between the center of the dots and the effective Bohr radius of a single isolated harmonic potential.

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