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inverse function

noun, Mathematics.
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.
Origin of inverse function
First recorded in 1810-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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