1 A sequence (m) is said to be contracture if there exists a constant k with ockal such that 11m+2-Anti |sk| Anfi-^m/ for all mex. Prove that contractive sequence is a and hence is convergent. every Cauchy sequence.

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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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**Definition and Proof of Contractive Sequences**

A sequence \((s_n)\) is said to be contractive if there exists a constant \(k\) with \(0 < k < 1\) such that:

\[
|s_{n+2} - s_{n+1}| \leq k |s_{n+1} - s_n|
\]

for all \(n \in \mathbb{N}\).

**Problem:** Prove that every contractive sequence is a Cauchy sequence and hence is convergent.
Transcribed Image Text:**Definition and Proof of Contractive Sequences** A sequence \((s_n)\) is said to be contractive if there exists a constant \(k\) with \(0 < k < 1\) such that: \[ |s_{n+2} - s_{n+1}| \leq k |s_{n+1} - s_n| \] for all \(n \in \mathbb{N}\). **Problem:** Prove that every contractive sequence is a Cauchy sequence and hence is convergent.
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