The values of a and b such that \[\underset{x\to 0}{\mathop{\lim }}\,\ – McqOptions

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1.	The values of a and b such that \[\underset{x\to 0}{\mathop{\lim }}\,\frac{x(1+a\cos x)-b\sin x}{{{x}^{3}}}=1\], are [Roorkee 1996]
A.	\[\frac{5}{2},\ \frac{3}{2}\]
B.	\[\frac{5}{2},\ -\frac{3}{2}\]
C.	\[-\frac{5}{2},\ -\frac{3}{2}\]
D.	None of these
Answer» D. None of these

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