In mathematics, a variable is a symbol that represents a quantity which can vary or change. It is used to express relationships and patterns in mathematical expressions and equations.
Variables are commonly represented by letters, such as x, y, or z, but they can also be represented by other symbols or combinations of symbols.
Variables can be used in different contexts, such as in algebra, where they are used to represent unknown quantities or values that can change, and in calculus, where they are used to represent varying quantities like time, distance, or velocity.
When working with variables, it is important to understand their properties and how they behave in different mathematical operations, such as addition, subtraction, multiplication, and division.
Variables are a fundamental concept in mathematics and are essential for solving mathematical problems and understanding mathematical relationships.