The equation has a root x 1

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• Root of unity — The 5th roots of unity in the complex plane In mathematics, a root of unity, or de Moivre number, is any complex number that equals 1 when raised to some integer power n. Roots of unity are used in many branches of mathematics, and are especially …   Wikipedia

• root — root1 [ro͞ot, root] n. [ME rote < Late OE < ON rot, akin to OE wyrt, Ger wurzel < IE base * wrād , twig, root > Gr rhiza, L radix, root, ramus, branch] 1. the part of a plant, usually below the ground, that lacks nodes, shoots, and… …   English World dictionary

• root — root1 rootlike, adj. /rooht, root/, n. 1. a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture. 2. a similar organ developed from some… …   Universalium

• Root — /rooht/, n. 1. Elihu /el euh hyooh /, 1845 1937, U.S. lawyer and statesman: Nobel peace prize 1912. 2. John Wellborn /wel beuhrn/, 1851 91, U.S. architect. * * * In botany, the underground anchoring part of a plant. It grows downward in response… …   Universalium

• Root-finding algorithm — A root finding algorithm is a numerical method, or algorithm, for finding a value x such that f(x) = 0, for a given function f. Such an x is called a root of the function f. This article is concerned with finding scalar, real or complex roots,… …   Wikipedia

• Equation solving — In mathematics, to solve an equation is to find what values (numbers, functions, sets, etc.) fulfill a condition stated in the form of an equation (two expressions related by equality). These expressions contain one or more unknowns, which are… …   Wikipedia

• Root mean square — In mathematics, the root mean square (abbreviated RMS or rms), also known as the quadratic mean, is a statistical measure of the magnitude of a varying quantity. It is especially useful when variates are positive and negative, e.g., sinusoids.It… …   Wikipedia

• Debye–Hückel equation — The Debye–Hückel equation and Debye–Hückel limiting law, were derived by Peter Debye and Erich Hückel, who developed a theory with which to calculate activity coefficients of electrolyte solutions.[1] Activities, rather than concentrations, are… …   Wikipedia

• Root (disambiguation) — A root is the part of a plant that is below ground. Root or Roots may also refer to: Contents 1 Computing 2 Geography 2.1 Switzerland …   Wikipedia

• Equation — This article is about equations in mathematics. For the chemistry term, see chemical equation. The first use of an equals sign, equivalent to 14x+15=71 in modern notation. From The Whetstone of Witte by Robert Recorde (1557). An equation is a… …   Wikipedia

• Debye-Hückel equation — The Debye Hückel limiting law, named for its developers Peter Debye and Erich Hückel, provides one way to obtain activity coefficients Ref|Harris. Activities, rather than concentrations, are needed in many chemical calculations because solutions… …   Wikipedia