CBSE 2026 · Region 3 · Set 1 · Q1 · 1 mark
The domain of $\displaystyle \mathrm{f}(\mathrm{x})=\cos ^{-1}(2 \mathrm{x}-5)$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
[$\displaystyle 2$, $\displaystyle 3$]
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CBSE Class 12 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.