. (a) How many quadratic residues are in the residue set Z19? (b) Determine if 4 and 9 are quadratic residues mod 19. (c) Can you solve the congruence x² = 8 (mod 19) ?
. (a) How many quadratic residues are in the residue set Z19? (b) Determine if 4 and 9 are quadratic residues mod 19. (c) Can you solve the congruence x² = 8 (mod 19) ?
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:. (a) How many quadratic residues are in the residue set Z₁9? (b)
Determine if 4 and 9 are quadratic residues mod 19. (c) Can you solve the congruence
x² = 8 (mod 19) ?
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