$1 + \frac{2}{1 \times 2 \times 3} + \frac{2}{3 \times 4 \times 5} + \frac{2}{5 \times 6 \times 7} + \dots$ નો સરવાળો કેટલો થાય?

  • A
    $2 \ln 2$
  • B
    $\ln 2$
  • C
    $3 \ln 3$
  • D
    $3 \ln 2$

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Similar Questions

જો $|a| < 1$ અને $b = \sum_{k=1}^{\infty} \frac{a^k}{k}$ હોય,તો $a$ ની કિંમત શું થાય?

શ્રેણી $\frac{1}{2 \times 3} + \frac{1}{4 \times 5} + \frac{1}{6 \times 7} + \dots = $ નો સરવાળો શોધો.

$2 \ln x - \ln(x + 1) - \ln(x - 1)$ ના વિસ્તરણમાં,$x^{-4}$ નો સહગુણક શું છે?

$\frac{m - n}{m + n} + \frac{1}{3}\left( \frac{m - n}{m + n} \right)^3 + \frac{1}{5}\left( \frac{m - n}{m + n} \right)^5 + \dots \infty = $

$\cosh^{-1} 2 = $

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