CBSE 2023 · Region 1 · Set 2 · Q1 · 1 mark
$\displaystyle \int \frac{1+\tan \mathrm{x}}{1-\tan \mathrm{x}} \mathrm{dx}$ is equal to :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \log \left|\sec \left(\frac{\pi}{4}+\mathrm{x}\right)\right|+\mathrm{C}$
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CBSE Class 12 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.