જો $\sin ^{-1}(4 x)+\sin ^{-1}(4 \sqrt{3} x)=-\frac{\pi}{2}$ હોય,તો $x$ નું નિરપેક્ષ મૂલ્ય શું છે?

  • A
    $\frac{1}{8}$
  • B
    $\frac{1}{6}$
  • C
    $\frac{2}{3}$
  • D
    $\frac{1}{4}$

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