The inverse function of a function is a function that does the opposite of . A function has an inverse if and only if it is bijective. The inverse of a function is denoted by (not to be confused with the reciprocal of ). Given any two functions, and (notice the reversal of the domain and codomain), we say that and are inverses of each other, denoted and if: * for all * for all File:Nuvola apps kbrunch.png This algebra-related article contains minimal information concerning its topic. You can help the Mathematics Wikia by adding to it.