A) \[\pi /2\]
B) 1
C) \[-1\]
D) \[-\pi /2\]
Correct Answer: D
Solution :
\[\int\limits_{0}^{\pi }{[\cot x]dx}\] \[\int\limits_{0}^{\pi }{\left\{ [\cot x]+[-\cot x] \right\}dx}\] \[\int\limits_{0}^{\pi /2}{(-1)dx=-\frac{\pi }{2}}\]
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