1. Consider the function | ƒ : Z → Z+, f(n) = { 2n 1 2n if n > 0, if n≤0. Show that f is a bijection by showing (from the definitions) that f is injective and surjective.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.2: Exponential Functions
Problem 11E
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1. Consider the function
| ƒ : Z → Z+, f(n) = {
2n
1 2n
if n > 0,
if n≤0.
Show that f is a bijection by showing (from the definitions) that f is injective and surjective.
Transcribed Image Text:1. Consider the function | ƒ : Z → Z+, f(n) = { 2n 1 2n if n > 0, if n≤0. Show that f is a bijection by showing (from the definitions) that f is injective and surjective.
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