$\tan ^{-1} 2 x+\tan ^{-1} 3 x=\frac{\pi}{4}$ को हल करें।

  • A
    $x=\frac{2}{3}$
  • B
    $x=\frac{5}{6}$
  • C
    $x=-1$
  • D
    $x=\frac{1}{6}$

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