Let f: R* N+ with f(x) = [x²1; that is, f(x) returns the square of x rounded up. Characterize f in terms of whether it is injective, surjective and/or bijective. This is not a formal proof, but briefly explain your reasoning.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
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Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
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15. Let f: R*→ N* with f(x) = [x²]; that is, f(x) returns the square of x rounded up. Characterize f in terms of
whether it is injective, surjective and/or bijective. This is not a formal proof, but briefly explain your reasoning.
->
Transcribed Image Text:15. Let f: R*→ N* with f(x) = [x²]; that is, f(x) returns the square of x rounded up. Characterize f in terms of whether it is injective, surjective and/or bijective. This is not a formal proof, but briefly explain your reasoning. ->
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