A) \[\left( \frac{-\pi }{2},\frac{\pi }{2} \right)\]
B) \[(0,\pi )-\left[ \frac{\pi }{2} \right]\]
C) \[\left[ \frac{-\pi }{2},\frac{\pi }{2} \right]\]
D) \[\left[ \frac{-\pi }{2},\frac{\pi }{2} \right]-\{0\}\]
Correct Answer: D
Solution :
[d] Principal value branch of \[\cos e{{c}^{-1}}\,x\] \[=\left[ \frac{-\pi }{2},\frac{\pi }{2} \right]-\{0\}\]
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