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KEAM 2020 Math Paper
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© examsnet.com
Question : 1
Total: 120
The domain of the function
f
given by
f
(
x
)
=
√
x
−
1
is
(
−
∞
,
∞
)
(
1
,
∞
)
[
1
,
∞
)
[
0
,
∞
)
(
0
,
∞
)
Validate
Solution:
f
(
x
)
=
√
x
−
1
⇒
x
−
1
≥
0
x
≥
1
⇒
[
1
,
∞
)
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