Question

The domain of the function $f(x) =\sqrt{\log_{16} \, x^2}$ is

• A. x = 0
• B. $|x| \geq 4$
• C. $|x| \geq 1$
• D. $|x| \geq 2$

Answer 1

Answer: (C)

$|x| \geq 1$

Answer 2

$x \neq 0$ and $x^2 \geq 1 \Rightarrow | x | \geq 1$