$\log_{10}\left(\frac{n}{n-1}\right)$ ના વિસ્તરણમાં $n^{-r}$ નો સહગુણક શું છે?

  • A
    $\frac{1}{r \log_e 10}$
  • B
    $-\frac{1}{r \log_e 10}$
  • C
    $-\frac{1}{r! \log_e 10}$
  • D
    આમાંથી કોઈ નહીં

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જો $-\frac{\pi}{2} < \theta < \frac{\pi}{2}$ હોય,તો $\log \left(\tan \left(\frac{\pi}{4}+\frac{\theta}{2}\right)\right)=$

$\log _4 2 - \log _8 2 + \log _{16} 2 - \ldots$ ની કિંમત શોધો.

જો $\tanh ^{-1} x = a \log \left(\frac{1+x}{1-x}\right)$, $|x| < 1$ હોય, તો $a$ ની કિંમત શોધો.

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