Question

b) In each of the following, assume that f : Z → Z. Then identify whether each is a function, onto function, one-to-one function, bijection.

• f(x) = x^ 2 − 1
• f(x) = x^ 2 + 1
• f(x) = √ x
• f(x) = ⌈ √ x⌉
• f(x) = 2^x

Answer 1

Answer:

theyare correct

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