શ્રેણી $\frac{1}{1 \times 2} - \frac{1}{2 \times 3} + \frac{1}{3 \times 4} - \dots \infty$ નો સરવાળો કેટલો થાય?

  • A
    $2 \log_{e} 2 + 1$
  • B
    $2 \log_{e} 2$
  • C
    $2 \log_{e} 2 - 1$
  • D
    $\log_{e} 2 - 1$

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Similar Questions

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

વિસ્તરણ $\log_e(1 + x) = \sum\limits_{i = 1}^\infty \left[ \frac{(-1)^{i + 1}x^i}{i} \right]$ માટે વ્યાખ્યાયિત છે:

જો $S = \frac{1}{1 \times 2} - \frac{1}{2 \times 3} + \frac{1}{3 \times 4} - \frac{1}{4 \times 5} + \dots + \infty$ હોય,તો $e^S = $

$\frac{1}{2} - \frac{1}{2 \cdot 2^2} + \frac{1}{3 \cdot 2^3} - \frac{1}{4 \cdot 2^4} + \ldots$ ની કિંમત શોધો.

જો $x, y, z$ ત્રણ ક્રમિક ધન પૂર્ણાંકો હોય,તો $\frac{1}{2}\log_e x + \frac{1}{2}\log_e z + \frac{1}{2xz + 1} + \frac{1}{3}\left( \frac{1}{2xz + 1} \right)^3 + \dots = $

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