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\frac{d}{d x} (x^{3} \sin x) =

x^{3} \cos x + 3 x^{2} \sin x

3 x^{3} \cos x + 3 x^{2} \sin x

3 x \cos x + 3 x^{2} \sin x

কোনোটিই নয়

ANS : 1

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