Mathematics, 17.08.2021 18:30 Michaelab
Here are two important definitions related to a function f : A ? B. The function f is one-to-one (1β1) if a1=/ a2 in A implies that f(a1) =/ f(a2) in B. The function f is onto if, given any b ? B, it is possible to find an element a ? A for which f(a) = b.
Give an example of each or state that the request is impossible:
(a) f : N ? N that is 1β1 but not onto.
(b) f : N ? N that is onto but not 1β1.
(c) f : N ? Z that is 1β1 and onto.
Answers: 1
Mathematics, 21.06.2019 12:30
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Mathematics, 21.06.2019 14:50
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Here are two important definitions related to a function f : A ? B. The function f is one-to-one (1β...
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