The domain of $f (x) = ln [x]$ is
(where [.] denotes the greatest integer function)

x > 0

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x > 1

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x \geq 1

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x \geq e

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Solution

The correct option is C $x \geq 1$
For $f (x) = ln [x]$ to be defined
$[x] > 0 \Rightarrow x \geq 1$

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