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Mathematics
Mathematics
Problem
Let
f
(
x
)
=
x
−
2
f(x)=\sqrt{x-2}
f
(
x
)
=
x
−
2
with domain
[
2
,
∞
)
[2,\infty)
[
2
,
∞
)
and
g
(
x
)
=
ln
x
g(x)=\ln x
g
(
x
)
=
ln
x
with domain
(
0
,
∞
)
(0,\infty)
(
0
,
∞
)
. The domain of
(
g
∘
f
)
(
x
)
(g\circ f)(x)
(
g
∘
f
)
(
x
)
is a)
{
x
∣
x
≥
4
}
\{x\mid x\ge 4\}
{
x
∣
x
≥
4
}
b)
{
x
∣
x
≥
2
}
\{x\mid x\ge 2\}
{
x
∣
x
≥
2
}
c)
{
x
∣
x
>
2
}
\{x\mid x>2\}
{
x
∣
x
>
2
}
d)
{
x
∣
x
>
0
}
\{x\mid x>0\}
{
x
∣
x
>
0
}
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