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algebraa value that does not change or vary in a mathematical expression or equation.
A constant is a value that does not change or vary in a mathematical expression or equation. It is the opposite of a variable, which can take on different values. Constants can be numbers, symbols, or even functions that remain unchanged throughout a given problem or context.
For example, in the equation , and are constants, while and are variables. The number is the coefficient of the variable , and is a constant term.
Constants can also be symbols that represent specific values, such as (approximately ), which is the ratio of a circle’s circumference to its diameter, or (approximately ), the base of the natural logarithm.
A variable is a symbol that represents an unknown or indeterminant quantity. Variables can represent numbers, vectors, or other mathematical objects, depending on the context.
A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
A function is a mathematical relationship between two sets, called the domain and the codomain, in which each element in the domain corresponds to exactly one element in the codomain.