equation

a mathematical statement that two expressions are equal a state of being essentially equal or equivalent

equally balanced

"on a par with the best" the act of regarding as equal

This article is about equations in mathematics. For equations in chemistry, see chemical equation.''In mathematics, one often (not quite always) distinguishes between an identity (mathematics)identity, which is an assertion that two expression (mathematics)expressions are equality (mathematics)equal regardless of the values of any variables that occur within them, and an equation, which may be true (logic)true for only some (or none) of the values of any such variables.In equations, the values of the variables for which the equation is true are called ''solutions''.For example:$(x+1)^2\; =\; x^2\; +\; 2x\; +\; 1$is an identity, while:$x^2\; -\; 5x\; +\; 6\; =\; 0$is an equation, whose solutions are ''x'' = 2 or ''x'' = 3.Letters from the beginning of the alphabet like ''a'', ''b'', ''c'', ... are often considered constants in the context of the discussion at hand, while letters from end of the alphabet, like ''x'', ''y'', ''z'', are usually considered variables.Thus to equation solvingsolve the equation, one must find what values fulfill the condition stated as an equation.

See also -

Linear equation

Quadratic equation

Cubic equation

Biquadratic equation

Inequality

Solution point

Differential equation

Integral equation

Functional equation

Diophantine equation

List of equations

External links -

Free Online Equation Interpreter and Plotter: wessa.net - ''Mathematical Equation Plotter''. Plots 2D mathematical equations, computes integrals, and finds solutions.

Solve 2D equations graphically and numerically: deadline.3x.ro - ''DeadLine''. Free Windows software.

eqworld.ipmnet.ru - Algebraic Equations and Systems of Algebraic Equations at EqWorld: The World of Mathematical Equations.Category:Elementary !algebraCategory:Equationsbn:� �মীকরণca:Equaciócs: Rovniceda:Ligningde:Gleichunge s:Ecuacióneo:Ekvaciofr:Équat ionko:방정식io:Equacionoit: Equazionehe:משוואהnl:Ver gelijking? !(wiskunde)ja:方程式no:Ligni ngnn:Likningpl:Równanie? !matematycznept:Equaçãoro:Ecu aţieru:Уравнениеsimp le:Equationsk:Rovnica? !(matematika)sv:Ekvationvi:Phư ơng? !trìnhuk:Рівнянняzh:� �程

The Human Equation: Science and Spirituality
Colored models that present the code of the Lost Ark of the Covenant, help solve all riddles and puzzles. - Donald D. Powell
http://www.thehumanequationinc.com/

UbiMathPoint
Math resources for K12 and teachers. Papers, tests on line and exercises with solutions.
http://www.pernigo.com/math/default.aspx

SETI Institute
Conducts scientific research on life in the universe. Here you can review current SETI results.
http://www.seti-inst.edu/

The Human Equation
Online course in Preventing & Managing Sexual Harassment, as well as advice to small and medium sized employer about risk management and human resources advice.
http://www.thehumanequation.com

Frontier Net of Minnesota
ISP, part of the Frontier Communications Corporation national net.
http://www.frontiernet.net/