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The domain of...
Question
The domain of the function
f
(
x
)
=
{
x
}
{
x
}
−
[
x
]
[
x
]
is:
(
[
x
]
represents the greatest integer function while
{
.
}
represents fractional part function
)
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Solution
Given function:
f
(
x
)
=
{
x
}
{
x
}
−
[
x
]
[
x
]
We know that
0
0
is not defined.
{
x
}
=
0
for
x
∈
Z
.
Also,
[
x
]
=
0
for
x
∈
[
0
,
1
)
.
Hence, we need to exclude from the solution.
The correct domain is
R
−
(
Z
∪
(
0
,
1
)
)
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0
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