Phrase guide

inverse function

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

Examples

  • Halving is the inverse function of doubling.
  • If an inverse function exists for a given function, then it is unique.
  • The inverse function of an inverse function is the original function.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: function, mathematical function, single-valued function, map, mapping

History

Etymology

No etymology was provided for this word.

Across languages

Translations

27 source translations are retained for this English entry.

  • Catalan: funció inversa — function that reverses the mapping action of a given function
  • Czech: inverzní funkce — function that reverses the mapping action of a given function
  • Danish: invers funktion — function that reverses the mapping action of a given function
  • Danish: omvendt funktion — function that reverses the mapping action of a given function
  • Finnish: käänteisfunktio — function that reverses the mapping action of a given function
  • French: fonction réciproque — function that reverses the mapping action of a given function
  • German: Umkehrfunktion — function that reverses the mapping action of a given function
  • German: inverse Funktion — function that reverses the mapping action of a given function
  • Hungarian: inverz függvény — function that reverses the mapping action of a given function
  • Italian: funzione inversa — function that reverses the mapping action of a given function
  • Japanese: 逆関数 (gyaku-kansū) — function that reverses the mapping action of a given function
  • Korean: 역함수 (yeokhamsu) — function that reverses the mapping action of a given function
  • Latin: fūnctiō inversa — function that reverses the mapping action of a given function
  • Norwegian Bokmål: invers funksjon — function that reverses the mapping action of a given function
  • Norwegian Nynorsk: invers funksjon — function that reverses the mapping action of a given function
  • Polish: funkcja odwrotna — function that reverses the mapping action of a given function
  • Portuguese: função inversa — function that reverses the mapping action of a given function
  • Russian: обратная фу́нкция (obratnaja fúnkcija) — function that reverses the mapping action of a given function
  • Serbo-Croatian: инверзна функција — function that reverses the mapping action of a given function
  • Serbo-Croatian: inverzna funkcija — function that reverses the mapping action of a given function
  • Slovak: inverzná funkcia — function that reverses the mapping action of a given function
  • Slovene: inverzna funkcija — function that reverses the mapping action of a given function
  • Spanish: función recíproca — function that reverses the mapping action of a given function
  • Spanish: función inversa — function that reverses the mapping action of a given function
  • Swedish: invers funktion — function that reverses the mapping action of a given function
  • Tagalog: baligtad na kabisa — function that reverses the mapping action of a given function
  • Ukrainian: обернена функція (obernena funkcija) — function that reverses the mapping action of a given function