$cosec^{-1}(-\sqrt{2})$ का मुख्य मान ज्ञात कीजिए।

  • A
    $-\frac{\pi}{6}$
  • B
    $\frac{\pi}{3}$
  • C
    $-\frac{\pi}{2}$
  • D
    $-\frac{\pi}{4}$

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मान लीजिए कि फलन $g: (-\infty, \infty) \rightarrow \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$,$g(u) = 2 \tan^{-1}(e^u) - \frac{\pi}{2}$ द्वारा दिया गया है। तब,$g$ है

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