Domain of the function |x^2-9 | is - Vidyadip

MCQ

Domain of the function $\log \left|x^2-9\right|$ is

A
R
B
$R -[-3,3]$
✓
$R -\{-3,3\}$
D
$\{-3,3\}$

✓

Answer

Correct option: C.

$R -\{-3,3\}$

(C)
For $x=-3,3,\left|x^2-9\right|=0$
Therefore, $\log \left|x^2-9\right|$ does not exist at
$x=-3,3$.
Hence, domain of function is $R -\{-3,3\}$

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