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Question

The domain of the function f(x)=ln{x} is
(where {.} represents fractional part function)

A
RZ
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B
R
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C
R+
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D
RW
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Solution

The correct option is A RZ
f(x)=ln{x}
For f(x) to be defined {x}>0
We know that, {x}[0,1) and
{x}=0 when xZ

The domain of the function ln{x} is RZ

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