3. Let f : R → R be defined by f(x) = x³ + 1: (a) Prove that f is injective. (b) Prove that f is surjective. (c) Prove that f is bijective. (d) Prove that f is invertible.
3. Let f : R → R be defined by f(x) = x³ + 1: (a) Prove that f is injective. (b) Prove that f is surjective. (c) Prove that f is bijective. (d) Prove that f is invertible.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.5: Permutations And Inverses
Problem 10E: 10. Let and be mappings from to. Prove that if is invertible, then is onto and is...
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