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inverse
inverse function
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inverse

in·verse [ in vúrss ]


adjective 
Definition:
 
1. opposite or reversing: opposite to or reversing something

2. mathematics involving oppositely affected variables: involving two variables that are in a mathematical relationship where, when one increases, the other decreases and vice versa



noun  (plural in·verses)
Definition:
 
1. opposite: something that is a total opposite

2. mathematics element of set: either of two elements of a set that when added together give 0, one being the negative of the other, e.g. 7 and -7

3. mathematics 
Same as  inverse function


4. logic opposite logical proposition: a logical proposition in which both the subject and the predicate are the opposite of another proposition

[15th century. < Latin inversus, past participle of invertere "turn upside down," literally "turn in" < vertere "to turn"]

in·verse·ly adverb
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