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Mathematics
Mathematics
Problem
Let
A
=
{
1
,
2
,
3
,
4
}
A=\{1,2,3,4\}
A
=
{
1
,
2
,
3
,
4
}
and
R
=
{
(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
4
,
4
)
,
(
1
,
3
)
,
(
3
,
1
)
}
R=\{(1,1),(2,2),(3,3),(4,4),(1,3),(3,1)\}
R
=
{(
1
,
1
)
,
(
2
,
2
)
,
(
3
,
3
)
,
(
4
,
4
)
,
(
1
,
3
)
,
(
3
,
1
)}
. Determine whether
R
R
R
is symmetric. Give a brief reason for your answer.
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