Origin: Latin suffix -tion
Inverse function has 2 different meanings across 1 category:
a function obtained by expressing the dependent variable of one function as the independent variable of another; f and g are inverse functions if f(x)=y and g(y)=x
For a given function f, another function, denoted f^(−1), that reverses the mapping action of f; (formally) given a function f:X→Y, a function g:Y→X such that, ∀x∈X,f(x)=y⟹g(y)=x.