CBSE 2026 · Region 3 · Set 2 · Q1 · 1 mark
If $\displaystyle \tan ^{-1} \mathrm{x}=\mathrm{y}$, then $\displaystyle \frac{\mathrm{dy}}{\mathrm{dx}}$ is equal to :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle \cos ^{2} \mathrm{y}$
Inverse Trigonometric FunctionsProperties of Inverse Trigonometric FunctionsRemembermcqeasy
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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.