If \[f(x)=\left\{ \begin{align} & \,\,\,\,\,\,\,\,\,\frac{1-\cos 4x}{{{x}^{2}}},\ \ \text{when}\,x0 \\ \end{align} \right.\], is continuous at \[x=0\], then the value of 'a' will be [IIT 1990; AMU 2000]

If \[f(x)=\left\{ \begin{align} & \,\,\,\,\,\,\,\,\,\frac{1-\cos 4x

1.	If \[f(x)=\left\{ \begin{align} & \,\,\,\,\,\,\,\,\,\frac{1-\cos 4x}{{{x}^{2}}},\ \ \text{when}\,x0 \\ \end{align} \right.\], is continuous at \[x=0\], then the value of 'a' will be [IIT 1990; AMU 2000]
A.	8
B.	?8
C.	4
D.	None of these
Answer» B. ?8

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If \[f(x)=\left\{ \begin{align} & \,\,\,\,\,\,\,\,\,\frac{1-\cos 4x}{{{x}^{2}}},\ \ \text{when}\,x0 \\ \end{align} \right.\], is continuous at \[x=0\], then the value of 'a' will be [IIT 1990; AMU 2000]

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