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Question
Mathematics
The domain of the function f(x)=(√x+2/x2-9) is
Q. The domain of the function
f
(
x
)
=
x
2
−
9
x
+
2
is
350
107
Relations and Functions - Part 2
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A
(
−
∞
,
−
3
)
∪
[
2
,
∞
)
B
[
2
,
3
)
C
[
−
2
,
3
)
∪
(
3
,
∞
)
D
(
−
∞
,
−
3
)
∪
(
3
,
∞
)
Solution:
x
+
2
≥
0
⇒
x
≥
−
2
x
2
−
9
=
0
⇒
x
=
±
3
[
−
2
,
3
)
∪
(
3
,
∞