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inverse
- The inverse of a number, or a reciprocal, is 1 divided by the number; for example, the inverse of 8 is 1/8 and the inverse of 3/5 is 5/3.
- The inverse of a function or a transformation is the function or transformation that the reverses the effect of the function or transformation. For example, the inverse of addition is subtraction, and of clockwise rotation is anticlockwise rotation.
- The inverse of an element of a set, or a number, with respect to a particular operation, is what has to be combined with the element or number in order to obtain that operation's identity element.
Related category
• MATHEMATICS
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