Search Result for "inverse function":
Wordnet 3.0

NOUN (1)

1. 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; 



WordNet (r) 3.0 (2006):

inverse function
    n 1: 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