(a) Explain why the function f(x) = e is not injective (one-to-one) on its natural domain. (b) Find the largest possible domain A, where all elements of A are non-negative and f: A → R, f(x) = e* is injective. (c) Find a codomain B such that f: A → B, f(x) = eª* is surjective.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.4: Definition Of Function
Problem 63E
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(a) Explain why the function f(x) = e¤ is not injective (one-to-one) on its natural
domain.
(b) Find the largest possible domain A, where all elements of A are non-negative and
f: A → R, f(x) = e=´ is injective.
(c) Find a codomain B such that f: A → B, f(x) = e´ is surjective.
(d) Show that g: B → A, g(x) = vInx is the inverse of f. Why is f-1(x) 7 -VIn x?
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Transcribed Image Text:(a) Explain why the function f(x) = e¤ is not injective (one-to-one) on its natural domain. (b) Find the largest possible domain A, where all elements of A are non-negative and f: A → R, f(x) = e=´ is injective. (c) Find a codomain B such that f: A → B, f(x) = e´ is surjective. (d) Show that g: B → A, g(x) = vInx is the inverse of f. Why is f-1(x) 7 -VIn x? |
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