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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 2 · Q12
If tan ((x+ y)/(x- y))= k, then dy/dx is equal to
If $\displaystyle \tan \left(\frac{x+\mathrm{y}}{x-\mathrm{y}}\right)=\mathrm{k}$, then $\displaystyle \frac{\mathrm{dy}}{\mathrm{dx}}$ is equal to
Official answer
(B)
$\displaystyle \frac{\mathrm{y}}{x}$
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CBSE Class 12 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.