
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Transcribed Image Text:dong anong tuoitittan oldin bad-tiert odt not mold
1 = 1 101 bus 0 =>
odiorg mel
7 10 diod gut
Preller of
Z, say whether
intsh For each of the following relations on the integers
is an equivalence relation; explain your answer. If is
an equivalence relation, give an explicit description of the set of equivalence
classes Z/~.
a.~y if and only if x > 0 and y > 0.
b. xy if and only if |x| = |y|.
c. x~y if and only if x - y = 2.
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