समाकलन $\int_0^{\frac{\pi}{4}} \frac{x \, dx}{\sin^4(2x) + \cos^4(2x)}$ का मान क्या है?

  • A
    $\frac{\sqrt{2} \pi^2}{8}$
  • B
    $\frac{\sqrt{2} \pi^2}{16}$
  • C
    $\frac{\sqrt{2} \pi^2}{32}$
  • D
    $\frac{\sqrt{2} \pi^2}{64}$

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