4. Prove that if a = b (modn) and m|n, then a = b (modm)…....
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:**Exercise 4**
Prove that if \( a \equiv b \pmod{n} \) and \( m \mid n \), then \( a \equiv b \pmod{m} \).
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This exercise asks you to demonstrate a property of modular arithmetic. Given two integers \( a \) and \( b \), and two moduli \( n \) and \( m \) such that \( m \) divides \( n \), you will need to show that if \( a \) is congruent to \( b \) modulo \( n \), then it must also be congruent to \( b \) modulo \( m \).
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