Inverse function and Mathematical function

Inverse function noun - 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.

Mathematical function and inverse function are semantically related. In some cases you can use "Mathematical function" instead a noun phrase "Inverse function".

Mathematical function noun - Mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function.

Inverse function and mathematical function are semantically related. Sometimes you can replace phrase "Inverse function" with "Mathematical function", this phrases are similar.