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In mathematics, the term quadratic describes something that pertains to squares, to the operation of squaring, to terms of the second degree, or equations or formulas that involve such terms. ''Quadratus'' is Latin for ''square''. == Mathematics == ; Algebra (elementary and abstract) * Quadratic function (or Quadratic polynomial), a polynomial function that contains terms of at most second degree * * Complex quadratic polynomials are particularly interesting for their sometimes chaotic properties under iteration * Quadratic equation, a polynomial equation of degree 2 (reducible to ''0'' = ''ax''2 + ''bx'' + c) * Quadratic formula, calculation to solve a quadratric equation for the independent variable (''x'') * Quadratic field, an algebraic number field of degree two over the field of rational numbers * Quadratic irrational or "quadratic surd", an irrational number that is a root of a quadratic polynomial ; Calculus * Quadratic integral, the integral of the reciprocal of a second-degree polynomial ; Statistics and stochastics * Quadratic form (statistics), scalar quantity ε'Λε for a n-dimensional square matrix * Quadratic mean, the square root of the mean of the squares of the data * Quadratic variation, in stochastics, useful for the analysis of Brownian motion and martingales ; Number theory * Quadratic reciprocity, a theorem from number theory * Quadratic residue, an integer that is a square modulo ''n'' * Quadratic sieve, a modern integer factorization algorithm ; Other * Quadratic convergence, in which the distance to a convergent sequence's limit is squared at each step * Quadratic differential, a form on a Riemann surface that locally looks like the square of an abelian differential * Quadratic form, a homogeneous polynomial of degree two in a number of variables * Quadratic programming, a special type of mathematical optimization problem. * Quadratic growth, an asymptotic growth rate proportional to a quadratic function * Periodic points of complex quadratic mappings, a type of graph that can be used to explore stability in control systems * Quadratic bézier curve a type of bezier curve 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「quadratic」の詳細全文を読む スポンサード リンク
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