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2. Domain of a function - Wikipedia

   en.wikipedia.org/wiki/Domain_of_a_function

   A function f from X to Y. The set of points in the red oval X is the domain of f. Graph of the real-valued square root function, f(x) = √ x, whose domain consists of all nonnegative real numbers. In mathematics, the domain of a function is the set of inputs accepted by the function.

3. Truncus (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Truncus_(mathematics)

   A mathematical graph of the basic truncus formula, marked in blue, with domain and range both restricted to [-5, 5]. = (+) + where a, b, and c are given constants. The two asymptotes of a truncus are parallel to the coordinate axes.

4. Free variables and bound variables - Wikipedia

   en.wikipedia.org/wiki/Free_variables_and_bound...

   This expression evaluates to false if the domain of and is the real numbers, but true if the domain is the complex numbers. The term "dummy variable" is also sometimes used for a bound variable (more commonly in general mathematics than in computer science), but this should not be confused with the identically named but unrelated concept of ...

5. Codomain - Wikipedia

   en.wikipedia.org/wiki/Codomain

   A function f from X to Y.The blue oval Y is the codomain of f.The yellow oval inside Y is the image of f, and the red oval X is the domain of f.. In mathematics, a codomain or set of destination of a function is a set into which all of the output of the function is constrained to fall.

6. Graph of a function - Wikipedia

   en.wikipedia.org/wiki/Graph_of_a_function

   Given a function: from a set X (the domain) to a set Y (the codomain), the graph of the function is the set [4] = {(, ()):}, which is a subset of the Cartesian product.In the definition of a function in terms of set theory, it is common to identify a function with its graph, although, formally, a function is formed by the triple consisting of its domain, its codomain and its graph.

7. Function (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Function_(mathematics)

   Formally, a function of n variables is a function whose domain is a set of n-tuples. [note 3] For example, multiplication of integers is a function of two variables, or bivariate function, whose domain is the set of all ordered pairs (2-tuples) of integers, and whose codomain is the set of