Sorry about the technical issue that I could not connect my iPad to Zoom in class today. Later on, I downloaded the newest version of Zoom and was able to do it. Here are the screenshots of the problems on my “TinyBlackboard”. I hope everyone got a clear understanding of the first part of Ch.14.
Lesson Review:
- an inverse: b*b^(-1) is congruent to 1 (mod m)
- only if gcd (m,r)=1, otherwise r has no reverse modulo m.
Extra Resource:
- https://mathworld.wolfram.com/LinearCongruenceEquation.html
- https://www.youtube.com/watch?v=4-HSjLXrfPs
- https://math.libretexts.org/Bookshelves/Combinatorics_and_Discrete_Mathematics/Book%3A_Elementary_Number_Theory_(Raji)/03%3A_Congruences/3.03%3A_Linear_Congruences
Homework:
- P260 Problem 14.1-14.5
- P264, Ex 14.2.1-14.2.3
Plan for the following weeks:
- 6/7: Ch.14 (II)
- 6/14: Ch.15
- 6/21: Final Exam
