a. Let n E Z. Show that n² = 1 (mod 3) if and only if 3 X n.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question

I have the following question, please if able give explanation with the taken steps, I especially struggle with giving structure to my proof, knowing what to mention and what not

thank you in advance

a.
b.
C.
Let n € Z. Show that n² = 1 (mod 3) if and only if 3 X n.
Let n1, n2 € Z and m € IN. Show that n² = n² (mod m) whenever n₁ = n₂
(mod m) or n₁ = −n₂ (mod m).
Assume m = p is prime. Show conversely that n₁ = n₂ (mod p) or n₁ = −n2
(mod p) whenever n = n (mod p).
HINT/REMARK. You may use without proof the following result known as Euclid's
Lemma: if p is prime and a, b are integers with plab, then pla or pb (or both).
Transcribed Image Text:a. b. C. Let n € Z. Show that n² = 1 (mod 3) if and only if 3 X n. Let n1, n2 € Z and m € IN. Show that n² = n² (mod m) whenever n₁ = n₂ (mod m) or n₁ = −n₂ (mod m). Assume m = p is prime. Show conversely that n₁ = n₂ (mod p) or n₁ = −n2 (mod p) whenever n = n (mod p). HINT/REMARK. You may use without proof the following result known as Euclid's Lemma: if p is prime and a, b are integers with plab, then pla or pb (or both).
Expert Solution
Step 1: Congruent of modules

Advanced Math homework question answer, step 1, image 1

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Similar questions
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,