The domain of \( \sec ^{-1}(2 x+1) \) is equal to
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The domain of \( \sec ^{-1}(2 x+1) \) is equal to
\( \mathrm{P} \)
(1) \( x \in(-\infty,-1] \cup[0, \infty) \)
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(2) \( x \leq-1 \)
(3) \( x \geq 0 \)
(4) None of these
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