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. In y = sin x and x = arc sin y, the inverse function of sine is arc sine.
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Origin of inverse function
First recorded in 1810–20
Words nearby inverse function
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020