a) Define what it means for a and b to be congruent modulo 7. b) Which pairs of the integers −11,−8,−7,−1, 0, 3, and 17 are congruent modulo 7? c) Show that if a and b are congruent modulo 7, then 10a + 13 and −4b + 20 are also congruent modulo 7.
a) Define what it means for a and b to be congruent modulo 7. b) Which pairs of the integers −11,−8,−7,−1, 0, 3, and 17 are congruent modulo 7? c) Show that if a and b are congruent modulo 7, then 10a + 13 and −4b + 20 are also congruent modulo 7.
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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a) Define what it means for a and b to be congruent modulo 7.
b) Which pairs of the integers −11,−8,−7,−1, 0, 3, and 17 are congruent modulo 7?
c) Show that if a and b are congruent modulo 7, then 10a + 13 and −4b + 20 are also congruent modulo 7.
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