4. Find d, the gcd (2695, 1547). Hence or otherwise, express in the form 2695p + 1547q = d, p, q E Z Solve for x, 54x = 7(mod31).

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.3: Divisibility
Problem 30E: Let be as described in the proof of Theorem. Give a specific example of a positive element of .
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4. Find d, the
gcd (2695, 1547).
Hence or otherwise, express in the form
2695p + 1547q = d,
p,q E Z
Solve for x,
54x = 7(mod31).
5. Solve completely the equation
z* – 1 = 0
The solution set S, of the equation z* = 1 is a Group under multiplication of complex
numbers.
i)
ii)
State the identity element of the element in this group
Find the inverse of each element.
The set T = {3,6,9,12} under multiplication modulo 15 also forms a Group.
iii)
iv)
Find the identity element and the inverse of each element.
Establish an isomorphism S =T
Transcribed Image Text:4. Find d, the gcd (2695, 1547). Hence or otherwise, express in the form 2695p + 1547q = d, p,q E Z Solve for x, 54x = 7(mod31). 5. Solve completely the equation z* – 1 = 0 The solution set S, of the equation z* = 1 is a Group under multiplication of complex numbers. i) ii) State the identity element of the element in this group Find the inverse of each element. The set T = {3,6,9,12} under multiplication modulo 15 also forms a Group. iii) iv) Find the identity element and the inverse of each element. Establish an isomorphism S =T
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