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R^2/Subsets/Sketch/Exercise
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Sketch the following subsets of
R
2
{\displaystyle {}\mathbb {R} ^{2}}
.
{
(
x
,
y
)
∣
x
=
5
}
{\displaystyle {}{\left\{(x,y)\mid x=5\right\}}}
,
{
(
x
,
y
)
∣
x
≥
4
and
y
=
3
}
{\displaystyle {}{\left\{(x,y)\mid x\geq 4{\text{ and }}y=3\right\}}}
,
{
(
x
,
y
)
∣
y
2
≥
2
}
{\displaystyle {}{\left\{(x,y)\mid y^{2}\geq 2\right\}}}
,
{
(
x
,
y
)
∣
|
x
|
=
3
and
|
y
|
≤
2
}
{\displaystyle {}{\left\{(x,y)\mid \vert {x}\vert =3{\text{ and }}\vert {y}\vert \leq 2\right\}}}
,
{
(
x
,
y
)
∣
3
x
≥
y
and
5
x
≤
2
y
}
{\displaystyle {}{\left\{(x,y)\mid 3x\geq y{\text{ and }}5x\leq 2y\right\}}}
,
{
(
x
,
y
)
∣
x
y
=
0
}
{\displaystyle {}{\left\{(x,y)\mid xy=0\right\}}}
,
{
(
x
,
y
)
∣
x
y
=
1
}
{\displaystyle {}{\left\{(x,y)\mid xy=1\right\}}}
,
{
(
x
,
y
)
∣
x
y
≥
1
and
y
≥
x
3
}
{\displaystyle {}{\left\{(x,y)\mid xy\geq 1{\text{ and }}y\geq x^{3}\right\}}}
,
{
(
x
,
y
)
∣
0
=
0
}
{\displaystyle {}{\left\{(x,y)\mid 0=0\right\}}}
,
{
(
x
,
y
)
∣
0
=
1
}
{\displaystyle {}{\left\{(x,y)\mid 0=1\right\}}}
.
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