Show that the function f (x) = |x| from the set of real numbers to the set

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Show that the function f (x) = |x| from the set of real numbers to the set of nonnegative real numbers is not invertible, but if the domain is restricted to the set of nonnegative real numbers, the resulting function is invertible.

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Discrete Mathematics and Its Applications

ISBN: 978-0073383095

7th edition

Authors: Kenneth H. Rosen

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Question Posted: May 02, 2016 12:17 PM

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Show that the function f (x) = |x| from the set of real numbers to the set

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The function is not onetoone for example f2 2 f2 so it ...View the full answer

Discrete Mathematics and Its Applications

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