CBSE 2026 · Region 2 · Set 1 · Q9 · 1 mark
If $\displaystyle \int_{0}^{2 \mathrm{a}} \frac{1}{1+4 x^{2}} \mathrm{~d} x=\frac{\pi}{6}$, then the value of a is
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle \frac{\sqrt{3}}{4}$
IntegralsSome Properties of Definite IntegralsApplymcqmedium
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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.