equation
Sign in to savethumb|right|300px|The first use of an equals sign, equivalent to 14x + 15 = 71 in modern notation. From The Whetstone of Witte by [[Robert Recorde of Wales (1557).]]
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An equation is a mathematical statement showing that two expressions are equal to each other, typically connected by an equals sign. Equations matter because they allow us to represent relationships between quantities and solve problems by finding unknown values.
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Article
25 sectionsContents
- Description
- Properties
- Examples
- Analogous illustration
- Parameters and unknowns
- Identities
- Algebra
- Polynomial equations
- Systems of linear equations
- Geometry
- Analytic geometry
- Cartesian equations
- Parametric equations
- Number theory
- Diophantine equations
- Algebraic and transcendental numbers
- Algebraic geometry
- Differential equations
- Ordinary differential equations
- Partial differential equations
- Types of equations
- See also
- Notes
- References
- External links
thumb|right|300px|The first use of an equals sign, equivalent to 14x + 15 = 71 in modern notation. From The Whetstone of Witte by [[Robert Recorde of Wales (1557).]]
In mathematics, an equation is a mathematical formula that expresses the equality of two expressions, by connecting them with the equals sign . The word equation and its cognates in other languages may have subtly different meanings; for example, in French an équation is defined as containing one or more variables, while in English, any well-formed formula consisting of two expressions related with an equals sign is an equation.