Range of \( f(x) \) is
(A) \( (0, \pi) \)
(B) \( \left(0, \pi^{2}\r...
Range of \( f(x) \) is
(A) \( (0, \pi) \)
(B) \( \left(0, \pi^{2}\right) \)
(C) \( \left(\frac{-\pi}{2}, \frac{\pi}{2}\right) \)
(D) \( \left(\frac{-\pi^{2}}{2}, \frac{\pi^{2}}{2}\right) \)
P
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