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For every element r in A, there is an element y in B such that (x, y) is in F. Can you explain how does this differ from a relation? Please answer this in a couple sentences NO NEED TO SHOW PROOF! AGAIN NO PROOF PLEASE!!!

For every element r in A, there is an element y in B such that (x, y) is in F. Can you explain how does this differ from a relation? Please answer this in a couple sentences NO NEED TO SHOW PROOF! AGAIN NO PROOF PLEASE!!!

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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For every element r in A, there is an element y in B such that (x, y) is in F. Can you explain how does this differ from a relation? Please answer this in a couple sentences NO NEED TO SHOW PROOF! AGAIN NO PROOF PLEASE!!!
Functions In Section 1.2 we showed that ordered pairs can be defined in terms of sets and we defined Cartesian products in terms of ordered pairs. In this section we introduced relations as subsets of Cartesian products. Thus we can now define functions in a way that depends only on the concept of set. Although this definition is not obviously related to the way we usually work with functions in mathematics, it is satisfying from a theoretical point of view, and computer scientists like it because it is particularly well suited for operating with functions on a computer. Definition A function F from a set A to a set B is a relation with domain A and co-domain B that satisfies the following two properties: 1. For every element x in A, there is an element y in B such that (x, y) E F.
Transcribed Image Text:Functions In Section 1.2 we showed that ordered pairs can be defined in terms of sets and we defined Cartesian products in terms of ordered pairs. In this section we introduced relations as subsets of Cartesian products. Thus we can now define functions in a way that depends only on the concept of set. Although this definition is not obviously related to the way we usually work with functions in mathematics, it is satisfying from a theoretical point of view, and computer scientists like it because it is particularly well suited for operating with functions on a computer. Definition A function F from a set A to a set B is a relation with domain A and co-domain B that satisfies the following two properties: 1. For every element x in A, there is an element y in B such that (x, y) E F.
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