Functional square root
Function that, applied twice, gives another function / From Wikipedia, the free encyclopedia
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Not to be confused with Root of a function.
In mathematics, a functional square root (sometimes called a half iterate) is a square root of a function with respect to the operation of function composition. In other words, a functional square root of a function g is a function f satisfying f(f(x)) = g(x) for all x.
This article needs editing to comply with Wikipedia's Manual of Style. In particular, it has problems with MOS:RADICAL. (June 2022) |