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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q9
∫ dx/(√(25-16 x^2)) is equal to:
$\displaystyle \int \frac{\mathrm{dx}}{\sqrt{25-16 \mathrm{x}^{2}}}$ is equal to :
Official answer
(C)
$\displaystyle \frac{1}{4} \sin ^{-1} \frac{4 \mathrm{x}}{5}+\mathrm{C}$
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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.