જો $f(x)=\tan ^{-1}\left[\frac{\log \left(\frac{e}{x^{2}}\right)}{\log \left(e x^{2}\right)}\right]+\tan ^{-1}\left[\frac{3+2 \log x}{1-6 \log x}\right]$ હોય, તો $f^{\prime \prime}(x)$ ની કિંમત કેટલી થાય?

  • A
    $x^{2}$
  • B
    $x$
  • C
    $1$
  • D
    $0$

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