File:FunctionMappingPersonToFavoriteFood.svg · Wikimedia Commons · See Wikimedia Commons
image
Sign in to saveAlso known as function range, image of a function, function image, range of function
set of all values of a function; set of all values that a function can produce; subset of codomain
~16 min read
Encyclopedic overview
For the function that maps a Person to their Favorite Food, the image of Gabriela is Apple. The preimage of Apple is the set {Gabriela, Maryam}. The preimage of Fish is the empty set. The image of the subset {Richard, Maryam} is {Rice, Apple}. The preimage of {Rice, Apple} is {Gabriela, Richard, Maryam}.
In mathematics, for a function
Excerpted from Wikipedia’s “image” article, available under the CC BY-SA 4.0 licence.