Question

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

• A. $R^{+}$
• B. $R^{-}$
• C. $R_{0}$
• D. $R$

Answer 1

Answer: (B)

$R^{-}$

Answer 2

For domain, $|x| - x > 0 \Rightarrow |x| > x$.

This is possible, only when $x \in R^{-}.$