This article is about a particular function from a subset of the real numbers to the real numbers. Information about the function, including its domain, range, and key data relating to graphing, differentiation, and integration, is presented in the article.
View a complete list of particular functions on this wiki
For functions involving angles (trigonometric functions, inverse trigonometric functions, etc.) we follow the convention that all angles are measured in radians. Thus, for instance, the angle of is measured as .
Fill this in later
We use the identity:
Note that the value of is constant within every connected component of the domain, but could differ between different connected components of the domain.
It is not possible to integrate this function repeatedly in terms of elementary functions, because cannot be integrated in terms of elementary functions.