MCQ
The domain of the function $f(x) = \sqrt {\log \frac{1}{{|\sin x|}}} $ is
  • A
    $R - \{ 2n\pi ,\;n \in I\} $
  • $R - \{ n\pi ,\;n \in I\} $
  • C
    $R - \{ - \pi ,\;\pi \} $
  • D
    $( - \infty ,\;\infty )$

Answer

Correct option: B.
$R - \{ n\pi ,\;n \in I\} $
b
(b) $f(x) = \sqrt {\,\log \frac{1}{{|\sin x|}}} $ 

==> $3 + x > 0$==> $x \ne n\pi + {( - 1)^n}0$

==> $x \ne n\pi $. Domain of $f(x)  = R - \{ n\pi ,\,\,n \in I\} $.

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