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Function (mathematics) - Wikipedia
In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function. Functions were originally the idealization of how a varying quantity depends on another quantity. For example, the … 展开
There are various standard ways for denoting functions. The most commonly used notation is functional notation, which is the first notation described below.
Functional notation
The functional notation requires that a name is given to the … 展开Given a function $${\displaystyle f}$$, by definition, to each element $${\displaystyle x}$$ of the domain of the function $${\displaystyle f}$$, … 展开
This section describes general properties of functions, that are independent of specific properties of the domain and the codomain. 展开
A function may also be called a map or a mapping, but some authors make a distinction between the term "map" and "function". For example, the term "map" is often reserved for a "function" with some sort of special structure (e.g. maps of manifolds). … 展开
The idea of function, starting in the 17th century, was fundamental to the new infinitesimal calculus. At that time, only real-valued functions of a real variable were considered, and all functions were assumed to be smooth. But the definition was soon extended to … 展开
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Functional (mathematics) - Wikipedia
Function - Encyclopedia of Mathematics
Function (mathematics) - Simple English Wikipedia, the free …
List of mathematical functions - Wikipedia
Encyclopedia of Mathematics
Function (mathematics) - Wikiversity
Function | Definition, Types, Examples, & Facts
2024年10月22日 · Learn about function in mathematics, a rule that defines a relationship between two variables. Explore common functions such as polynomial, trigonometric, exponential, and complex, and their graphs and …