જો $y = \sin^{-1}\left(\frac{2^{x+1}}{1+4^x}\right)$ અને $\frac{dy}{dx} = \frac{2^{x+1} \log 2}{f(x)}$ હોય,તો $f(0) = $ . . . . . .

  • A
    $2$
  • B
    $0$
  • C
    $-2$
  • D
    $2 \log 2$

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