Which of the following multiplication tables defined on the set G = {a,b,c, d} form a group? Support your answer in each case. o|a bcd с da a. bb b c d o|a bed a bcd b. b b a de а а a da b c da DPP ddeba P bcd a a d cd a b d. bb c da с da ь d d a b с a. a. a. c. b b ed a e da b ddabc

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Which of the following multiplication tables defined on the set G = {a,b, c, d} form a group? Support
your answer in each case.
%3D
o|a b cd
o|a b c d
с d
d c
с d a
a b
a
a
a
b. b b
a. b b b
d
d
a
a
с d a
dd
b a
P P
a
d
с d
a
e d
с а a
c. bb
d
d. bb
с da b
ddabc
с d a
ddabc
For each of the groups that you identified above, list the proper subgroups (if any exist).
Transcribed Image Text:Which of the following multiplication tables defined on the set G = {a,b, c, d} form a group? Support your answer in each case. %3D o|a b cd o|a b c d с d d c с d a a b a a a b. b b a. b b b d d a a с d a dd b a P P a d с d a e d с а a c. bb d d. bb с da b ddabc с d a ddabc For each of the groups that you identified above, list the proper subgroups (if any exist).
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