Problem 2 Let f: [a, b] → [a, b] such that f(x) − f (y)| < |x − y for all a ≤ x ≤ y ≤ b. Prove that there exists ce [a, b] such that f(c) = c.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
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Problem 2.
Let f: [a, b] → [a, b] such that [f(x) − f (y)| < |x − y| for all a ≤ x ≤ y ≤ b. Prove that there
exists ce [a, b] such that f(c) = c.
Transcribed Image Text:Problem 2. Let f: [a, b] → [a, b] such that [f(x) − f (y)| < |x − y| for all a ≤ x ≤ y ≤ b. Prove that there exists ce [a, b] such that f(c) = c.
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