# functional root

## EnglishEdit

### NounEdit

**functional root** (*plural* **functional roots**)

- (mathematics) A function which, when applied a given number of times, equals another given function.
*is the functional 2nd root of .*

**functional root** (*plural* **functional roots**)

- (mathematics) A function which, when applied a given number of times, equals another given function.
*$x^{2}+1$ is the functional 2nd root of $x^{4}+2x^{2}+2$ .*