Wordnet polsko-angielski 
                         (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) 
inverse function 
 (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) 
inverse function