Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 7 - Functions - Exercise Set 7.2 - Page 415: 36

Answer

Let f(x) = x is one to one, and g(x) = -x is also one to one (f+g)(x) = 0 for all x, hence f+g is not one to one.

Work Step by Step

Let f(x) = x is one to one, and g(x) = -x is also one to one (f+g)(x) = 0 for all x, hence f+g is not one to one.
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