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Problem
Problem
The function
f
(
x
)
=
sec
−
1
x
x
−
[
x
]
f(x)=\frac{\sec^{-1}x}{\sqrt{x-[x]}}
f
(
x
)
=
x
−
[
x
]
s
e
c
−
1
x
, where
[
.
]
[.]
[
.
]
denotes the greatest integer less than or equal to
x
x
x
is defined for all
x
x
x
belonging to (a)
R
R
R
(b)
R
−
{
(
−
1
,
1
)
∪
(
n
∣
n
∈
Z
)
}
R-\{(-1, 1) \cup (n | n \in Z)\}
R
−
{(
−
1
,
1
)
∪
(
n
∣
n
∈
Z
)}
(c)
R
+
−
(
0
,
1
)
R^+-(0, 1)
R
+
−
(
0
,
1
)
(d)
R
+
−
{
n
∣
n
∈
N
}
R^+-\{n | n \in N\}
R
+
−
{
n
∣
n
∈
N
}
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