જો $\int \frac{\sin ^8 x-\cos ^8 x}{1-2 \sin ^2 x \cos ^2 x} d x=A \sin 2 x+B$ હોય,તો $A$ ની કિંમત શોધો.

  • A
    $-\frac{1}{2}$
  • B
    -$1$
  • C
    $\frac{1}{2}$
  • D
    $1$

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