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प्रश्न
sin2 x
उत्तर
\[\frac{d}{dx}\left( \sin^2 x \right)\]
\[ = 2 \sin x \frac{d}{dx}\left( \sin x \right) (\text{ Using the chain rule })\]
\[ = 2 \sin x \cos x\]
\[ = \sin 2x\]
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