SanaiHardrick
18.07.2019 •
Mathematics
Discrete math question
consider functions f : {1,2,3,4}→{1,2,3,4,5,6}.
a) give an example of one such function (use 2-line notation). then say how many such functions there are and why your answer makes sense.
(b)give one example of such a function that is injective and one that is not. then say how many injective functions there are and why your answer makes sense.
(c) explain why there are no surjective functions with this domain and codomain.
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