funktiomäärityksen
Funktiomäärityksen refers to the process of defining a function in mathematics. A function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. The set of inputs is called the domain, and the set of outputs is called the codomain. The actual set of outputs produced by the function is called the range or image.
To define a function, one must specify the domain, the codomain, and the rule that assigns to
Functions can be classified based on their properties, such as injective (one-to-one), surjective (onto), and bijective