यदि $x = \operatorname{sech}^{-1} \frac{1}{2} + \tanh^{-1} \frac{1}{2}$ है,तो $\cosh x =$

  • A
    $\frac{5 \sqrt{3} + 4}{3}$
  • B
    $\frac{2 \sqrt{3} + 3}{2}$
  • C
    $\frac{4 \sqrt{3} + 3}{3}$
  • D
    $\frac{4 \sqrt{3} - 3}{3}$

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Similar Questions

$\frac{1}{1 \cdot 3} + \frac{1}{2 \cdot 5} + \frac{1}{3 \cdot 7} + \frac{1}{4 \cdot 9} + \dots$ का मान ज्ञात कीजिए।

$\frac{1}{5} + \frac{1}{2} \cdot \frac{1}{5^2} + \frac{1}{3} \cdot \frac{1}{5^3} + \dots \infty = $

$\frac{1}{2} - \frac{1}{2 \cdot 2^2} + \frac{1}{3 \cdot 2^3} - \frac{1}{4 \cdot 2^4} + \ldots$ का मान ज्ञात कीजिए।

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

यदि $y = - \left( {{x^3} + \frac{{{x^6}}}{2} + \frac{{{x^9}}}{3} + \dots} \right)$ है,तो $x = $

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