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Mathematics
Mathematics
Problem
Let
A
=
{
1
,
2
}
A=\{1,2\}
A
=
{
1
,
2
}
,
B
=
{
3
,
4
,
5
}
B=\{3,4,5\}
B
=
{
3
,
4
,
5
}
and
R
=
{
(
1
,
3
)
,
(
2
,
3
)
}
R=\{(1,3),(2,3)\}
R
=
{(
1
,
3
)
,
(
2
,
3
)}
be a relation from
A
A
A
to
B
B
B
. a. (i) Write the domain, range and codomain of
R
R
R
. b. (ii) State why, in this case, the range is a proper subset of the codomain.
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