यदि $0 < x < 1$ है,तो $\frac{3}{2} x^{2} + \frac{5}{3} x^{3} + \frac{7}{4} x^{4} + \ldots$ का मान ज्ञात कीजिए:

  • A
    $x \left( \frac{1+x}{1-x} \right) - \log_{e}(1-x)$
  • B
    $x \left( \frac{1-x}{1+x} \right) + \log_{e}(1-x)$
  • C
    $\frac{1-x}{1+x} + \log_{e}(1-x)$
  • D
    $\frac{1+x}{1-x} + \log_{e}(1-x)$

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यदि $-\frac{\pi}{2} < \theta < \frac{\pi}{2}$ है,तो $\log \left(\tan \left(\frac{\pi}{4}+\frac{\theta}{2}\right)\right)=$

यदि $0 < x < 1$ और $y = \frac{1}{2} x^{2} + \frac{2}{3} x^{3} + \frac{3}{4} x^{4} + \dots$ है,तो $x = \frac{1}{2}$ पर $e^{1+y}$ का मान क्या है?

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