माना $y = \log_8 \left( \frac{1-x^2}{1+x^2} \right)$ जहाँ $-1 < x < 1$ है। तो $x = \frac{1}{2}$ पर,$225(y' - y'')$ का मान क्या होगा?

  • A
    $732$
  • B
    $746$
  • C
    $742$
  • D
    $736$

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