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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 3 · Q5
The domain of cos^-1(4 x +1) is:
The domain of $\displaystyle \cos ^{-1}(4 \mathrm{x}+1)$ is :
Official answer
(D)
$\displaystyle \left[-\frac{1}{2}, 0\right]$
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CBSE Class 12 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.