$\int_{- 1 / 2}^{1 / 2} \{ [x] + \log (\frac{1 + x}{1 - x}) \} dx =$

  • A
    $2 \log (1 / 2)$
  • B
    $0$
  • C
    $- 1 / 2$
  • D
    $1$

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मान लीजिए कि फलन $f(x) = \log_{4}(\log_{5}(\log_{3}(18x - x^{2} - 77)))$ का प्रांत $(a, b)$ है। तो समाकलन $\int_{a}^{b} \frac{\sin^{3} x}{\sin^{3} x + \sin^{3}(a + b - x)} dx$ का मान $.....$ है।

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