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Mathematics
Problem
Let
h
(
x
)
=
x
−
1
x
2
−
4
h(x)=\dfrac{\sqrt{x-1}}{x^{2}-4}
h
(
x
)
=
x
2
−
4
x
−
1
. Which one of the following describes the domain of
h
h
h
? a)
(
1
,
2
)
∪
(
2
,
∞
)
(1,2)\cup(2,\infty)
(
1
,
2
)
∪
(
2
,
∞
)
b)
[
1
,
∞
)
[1,\infty)
[
1
,
∞
)
c)
[
1
,
2
)
∪
(
2
,
∞
)
[1,2)\cup(2,\infty)
[
1
,
2
)
∪
(
2
,
∞
)
d)
(
2
,
∞
)
(2,\infty)
(
2
,
∞
)
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