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bijection réciproque
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application inverse d'une bijection pour la composition
An inverse function reverses what another function does: if a function turns an input into an output, its inverse function turns that output back into the original input. Inverse functions are useful because they let you undo a mathematical operation and recover the starting value from the result.
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Article · Français
En mathématiques, la bijection réciproque (ou fonction réciproque ou réciproque) d'une bijection ƒ est l'application qui associe à chaque élément de l'ensemble d'arrivée son unique antécédent par ƒ. Elle se note .
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