$\frac{1}{2 \cdot 3} + \frac{1}{4 \cdot 5} + \frac{1}{6 \cdot 7} + \frac{1}{8 \cdot 9} + \dots$ का मान ज्ञात कीजिए।

  • A
    $\log \left(\frac{2}{e}\right)$
  • B
    $\log \left(\frac{e}{2}\right)$
  • C
    $\log (2e)$
  • D
    $e - 1$

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Similar Questions

$1 + \frac{2}{3} - \frac{2}{4} + \frac{2}{5} - \dots \infty = $

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

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

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

यदि $0 < y < 2^{1/3}$ और $x(y^3 - 1) = 1$ है,तो $\frac{2}{x} + \frac{2}{3x^3} + \frac{2}{5x^5} + \dots$ का मान ज्ञात कीजिए:

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