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3. Let f: Z → Z be defined by f(x) = 2x² + x. Is f surjective? Is f injective? Justify your answers.

3. Let f: Z → Z be defined by f(x) = 2x² + x. Is f surjective? Is f injective? Justify your answers.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.5: Rational Functions
Problem 50E
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3. Let f: ZZ be defined by f(x) = 2x² + x. Is f surjective? Is f injective? Justify your answers.
Transcribed Image Text:3. Let f: ZZ be defined by f(x) = 2x² + x. Is f surjective? Is f injective? Justify your answers.
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