Functional square root
= Functional square root
{wiki=Functional_square_root}
The term "functional square root" generally refers to a concept in mathematics where one function is considered the square root of another function. More formally, if \\( f(x) \\) is a function, then a function \\( g(x) \\) can be considered a functional square root of \\( f(x) \\) if: \\\[ g(x)^2 = f(x) \\\] for all \\( x \\) in the domain of interest.