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Mathematics
Mathematics
Problem
Let
A
=
{
−
2
,
−
1
,
0
,
1
,
2
}
A=\{-2,-1,0,1,2\}
A
=
{
−
2
,
−
1
,
0
,
1
,
2
}
and
B
=
{
0
,
1
,
2
,
3
,
4
}
B=\{0,1,2,3,4\}
B
=
{
0
,
1
,
2
,
3
,
4
}
. If
R
=
{
(
x
,
y
)
:
y
=
∣
x
∣
,
x
∈
A
,
y
∈
B
}
R=\{(x,y):y=|x|,\;x\in A,\;y\in B\}
R
=
{(
x
,
y
)
:
y
=
∣
x
∣
,
x
∈
A
,
y
∈
B
}
, then the range of
R
R
R
is a)
{
−
2
,
−
1
,
0
,
1
,
2
}
\{-2,-1,0,1,2\}
{
−
2
,
−
1
,
0
,
1
,
2
}
b)
{
0
,
1
,
2
}
\{0,1,2\}
{
0
,
1
,
2
}
c)
{
0
,
1
,
2
,
3
,
4
}
\{0,1,2,3,4\}
{
0
,
1
,
2
,
3
,
4
}
d)
{
0
,
1
,
4
}
\{0,1,4\}
{
0
,
1
,
4
}
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