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Mathematics
Problem
Consider the mapping
f
f
f
defined by
f
(
x
)
=
1
x
−
2
f(x)=\dfrac{1}{x-2}
f
(
x
)
=
x
−
2
1
. Which of the following sets is the domain of
f
f
f
? a)
R
\mathbb{R}
R
b)
R
∖
{
2
}
\mathbb{R}\setminus\{2\}
R
∖
{
2
}
c)
(
2
,
∞
)
(2,\infty)
(
2
,
∞
)
d)
R
∖
{
0
,
2
}
\mathbb{R}\setminus\{0,2\}
R
∖
{
0
,
2
}
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