View source for Real-valued function

In [[mathematics]], a '''real-valued function''' or '''real function''' is a [[Function (mathematics)|function]] whose [[Codomain|values]] are [[Real number|real numbers]].

In other words, it is a function that assigns a real number to each member of its [[Domain of a function)|domain]].

Many important [[Function space|function spaces]] are defined to consist of real functions.

== See also ==

* [[Domain of a function)]]
* [[Function (mathematics)]]
* [[Function space]]
* [[Real analysis]]
* [[Partial differential equation]], a major user of real-valued functions
* [[Norm (mathematics)]]
* [[Scalar (mathematics)]]

== External links ==

* [https://en.wikipedia.org/wiki/Real-valued_function Real-valued function] @ Wikipedia.org 


[[Category:Functions]]
[[Category:Mathematics]]