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Definition of a Function
publish date: 2023/09/14 00:10:00 GMT+10
Let A and B be two nonempty sets.
A function ƒ from A to B is a subset of (1)(involving the entire set (2)) with the property that each “a” belonging to A, belongs to precisely one ordered pair (a, b), in the subset of A x B, under consideration. In other words, a function ƒ from set A to set B consists of a set of ordered pairs (a, b) A x B such that no two order pairs have the same (3) element.
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A x B
second
A
first
B
B x A
Correct Answer
(1) A x B
(2) A
(3) first
Reference
Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012, go-math-science.com