The domain of the function

Question:

The domain of the function $f(x)=\frac{1}{\sqrt{|x|-x}}$ is :-

  1. $(-\infty, 0)$

  2. $(-\infty, \infty)-\{0\}$

  3. $(-\infty, \infty)$

  4. $(0, \infty)$

Correct Option: 1

Solution:

$f(x)=\frac{1}{\sqrt{|x|-x}}$

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