\(\newcommand{\twoline}[2]{\begin{pmatrix}#1 \\ #2 \end{pmatrix}}\newcommand{\amp}{&}\)
The following functions all have domain and codomain For each, determine whether it is (only) injective, (only) surjective, bijective, or neither injective nor surjective.
?
Injective
Surjective
Bijective
Neither
?
Injective
Surjective
Bijective
Neither
gives the number of letters in the English word for the number For example, since “one” contains three letters.
?
Injective
Surjective
Bijective
Neither