Let A, B, and C be three sets, and let f : A → B and g : B → C be two functions. Assume that the function g ◦ f : A → C is one-to-one. Prove that f is one-to-one.
Let A, B, and C be three sets, and let f : A → B and g : B → C be two functions. Assume that the function g ◦ f : A → C is one-to-one. Prove that f is one-to-one.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.4: Definition Of Function
Problem 58E
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Let A, B, and C be three sets, and let f : A → B and g : B → C be two functions. Assume that the function g ◦ f : A → C is one-to-one. Prove that f is one-to-one.
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