_ x 0 3 x - 3x x^3 = - Vidyadip

Question

$\mathop {\lim }\limits_{x \to 0} \frac{{3\sin x - \sin 3x}}{{{x^3}}} = $

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Answer

a
(a) $\mathop {\lim }\limits_{x \to 0} \,\,\frac{{4\,{{\sin }^3}x}}{{{x^3}}} = 4.$

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