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A. f is one-to-one but not onto.
B. f is both one-to-one and onto.
C. f is onto but not one-to-one.
D. f is neither one-to-one nor onto.
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FUO.sh
sh the exam.
Let f: Z N be the function defined as follows
f(n) =
(-2n, n≤0
2n+1, n>0
Choose the correct answer.
