. Let f : [0, 1] → [0, 1] be a continuous function such that f(0) = 0 and onsider the sequence of functions fn : [0, 1] → [0, 1] defined as follows: fi = f and fn+1 = f • fn for n > 1. f{fn}nz1 Converges uniformly, then f(x) = x for all x E (0,1].

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Let f : [0, 1] → [0, 1] be a continuous function such that f (0) = 0 and f (1) = 1. Consider the sequence of functions fn : [0, 1] → [0, 1] defined as follows:

f1 =f and fn+1 =f◦fn forn≥1.
Prove that if {fn}n≥1 converges uniformly, then f(x) = x for all x ∈ [0,1].

Exercise 4. Let f : [0, 1] → [0, 1] be a continuous function such that f (0) = 0 and
f (1) = 1. Consider the sequence of functions fn : [0, 1] –→ [0, 1] defined as follows:
fi = f and fn+1 = f o fn for n > 1.
Prove that if {fn}n>1 converges uniformly, then f(x)
= x for all x E [0, 1].
Transcribed Image Text:Exercise 4. Let f : [0, 1] → [0, 1] be a continuous function such that f (0) = 0 and f (1) = 1. Consider the sequence of functions fn : [0, 1] –→ [0, 1] defined as follows: fi = f and fn+1 = f o fn for n > 1. Prove that if {fn}n>1 converges uniformly, then f(x) = x for all x E [0, 1].
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