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Algebra
Find the Intersection of the Sets {5,6,7,8,9} union {1,2,3,4}
{
5
,
6
,
7
,
8
,
9
}
∪
{
1
,
2
,
3
,
4
}
{
5
,
6
,
7
,
8
,
9
}
∪
{
1
,
2
,
3
,
4
}
Step 1
Set
up the
intersection
notation of
set
{
5
,
6
,
7
,
8
,
9
}
{
5
,
6
,
7
,
8
,
9
}
and
{
1
,
2
,
3
,
4
}
{
1
,
2
,
3
,
4
}
.
{
5
,
6
,
7
,
8
,
9
}
∩
{
1
,
2
,
3
,
4
}
{
5
,
6
,
7
,
8
,
9
}
∩
{
1
,
2
,
3
,
4
}
Step 2
The
intersection
of two
sets
is the
set
of
elements
which are in both
sets
. The
intersection
in this case is an
empty set
.
{
}
{
}
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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