Injective and surjective Find an injective function f which maps A to B where A = {1, 2, 3) and B = {a, b, c, d} Why is there no surjective function from A to B? UBJECT Under what conditions can there be a function from A to A which is surjective but not injective? Give an example of such a function, if it exists.

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Injective and surjective
Find an injective function f which maps A to B where A = {1, 2, 3) and B = {a, b, c, d} Why is there no
surjective function from A to B?
UBJECT
Under what conditions can there be a function from A to A which is surjective but not injective? Give an
example of such a function, if it exists.
Transcribed Image Text:Injective and surjective Find an injective function f which maps A to B where A = {1, 2, 3) and B = {a, b, c, d} Why is there no surjective function from A to B? UBJECT Under what conditions can there be a function from A to A which is surjective but not injective? Give an example of such a function, if it exists.
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