मान लीजिए $x \in R$ और $|x| < 1$ है। तो $\tanh ^{-1} x=$

  • A
    $\frac{1}{2} \log \left(\frac{1+x}{1-x}\right)$
  • B
    $\frac{1}{2} \log \left(\frac{1-x}{1+x}\right)$
  • C
    $\frac{1}{2} \log \left(x+\sqrt{1-x^2}\right)$
  • D
    $\frac{1}{2} \log \left(x-\sqrt{1-x^2}\right)$

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Similar Questions

मान ज्ञात कीजिए: $\log_e \sqrt{\frac{1+x}{1-x}}$

$\frac{1}{2}x^2 + \frac{2}{3}x^3 + \frac{3}{4}x^4 + \dots \infty = $

यदि $y = 2x^2 - 1$ है,तो $\left[ \frac{1}{y} + \frac{1}{3y^3} + \frac{1}{5y^5} + \dots \right]$ का मान क्या होगा?

श्रेणी $\frac{1}{2 \times 3} + \frac{1}{4 \times 5} + \frac{1}{6 \times 7} + \dots = $ का योग ज्ञात कीजिए।

$\log _4 2 - \log _8 2 + \log _{16} 2 - \ldots$ का मान ज्ञात कीजिए।

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