A) 3
B) 6
C) 12
D) None of these
Correct Answer: B
Solution :
[b] \[f(\pi /2)=3\]. Since \[f(x)\] is continuous at \[x=\pi /2\] \[\Rightarrow \underset{x\to \pi /2}{\mathop{\lim }}\,\left( \frac{k\,\cos \,x}{\pi -2x} \right)=f\left( \frac{\pi }{2} \right)\Rightarrow \frac{k}{2}=3\Rightarrow k=6\]You need to login to perform this action.
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