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Dictionary

in'verse func'tion

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. In y = sin x and x = arc sin y, the inverse function of sin is arc sine.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

inverse

inverse image

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