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Zmienny Definicja
In mathematics, a variable is a symbol used to represent an arbitrary element that can change or that may take on different values. Variables may also refer to a letter, symbol, or snippet of words or text, representing such a quantity. In addition to numbers, variables are commonly used to represent vectors, matrices and functions.
Tworzenie obliczeń algebraicznych ze zmiennymi, jakby były one jawne liczby, pozwala rozwiązać szereg problemów w jednym obliczeniu. Typowym przykładem jest formuła kwadratowa
In mathematical logic, a variable is either a symbol representing an unspecified term of the theory, or a basic object of the theory, which is manipulated without referring to its possible intuitive interpretation.
Źródła
“Variable (Mathematics).” Wikipedia, Wikimedia Foundation, 4 Mar. 2020, en.wikipedia.org/wiki/Variable_(mathematics).