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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 1 · Q14
∫ (cos 2 x - cos 2 α)/(cos x - cos α) d x is equal to:
$\displaystyle \int \frac{\cos 2 \mathrm{x}-\cos 2 \alpha}{\cos \mathrm{x}-\cos \alpha} d \mathrm{x}$ is equal to :
Official answer
(A)
$\displaystyle 2(\sin \mathrm{x}+\mathrm{x} \cos \alpha)+\mathrm{C}$
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CBSE Class 12 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.