# inverse function

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Related to inverse function: Composite function, Inverse trigonometric functions

## inverse function

*n.*

*Mathematics*

A function whose relation to a given function is such that their composite is the identity function. It is often found by interchanging dependent and independent variables.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## in′verse func′tion

*n.*

*Math.*the function that replaces another function when the dependent and independent variables of the first function are interchanged for an appropriate set of values of the dependent variable.

[1810–20]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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Noun | 1. | 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)=xfunction, mapping, mathematical function, single-valued function, map - (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) |

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