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corey1234
 2 years ago
If it is the GRAPH of a function from A to B that is a subset of A x B, then why do websites say that a function f is a subset of A x B? Such as this website on page 7 of 22
http://www.mathdb.org/notes_download/elementary/algebra/ae_A1.pd
corey1234
 2 years ago
If it is the GRAPH of a function from A to B that is a subset of A x B, then why do websites say that a function f is a subset of A x B? Such as this website on page 7 of 22 http://www.mathdb.org/notes_download/elementary/algebra/ae_A1.pd

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watchmath
 2 years ago
Best ResponseYou've already chosen the best response.0well a function is a special relation. If a is related to b by a relation we write it as aRb. But to make it more convinient we just write it as (a,b) to say that aRb.

corey1234
 2 years ago
Best ResponseYou've already chosen the best response.0So you are saying that a function is already a set of ordered pairs/?

watchmath
 2 years ago
Best ResponseYou've already chosen the best response.0strictly speaking functions is the rule that relates an ordered pairs. But if we are given the ordered pairs then we know how the rule behave.
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