Coba jelasin Graph of a function dari Fungsi (matematika) dalam bahasa sunda dong

The graph of a function f is the set of all ordered pairs(x, f(x)), for all x in the domain X. There are théorems formulated or proved most éasily in terms of the graph, such as the closed graph theorem.

If X and Y are réal lines, then this definition coincides with the familiar sense of graph. Below is the graph of a cubic function:

This function is surjective but not injective.

Note that since a relation on the two sets X and Y is usually formalized as a subset of X×Y, the formal definition of function actually identifies the function f with its graph.