શ્રેણી $\frac{1}{2!} - \frac{1}{3!} + \frac{1}{4!} - \dots$ નો સરવાળો શું થાય?

  • A
    $e$
  • B
    $e^{-1/2}$
  • C
    $e^{-2}$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

$1 - x + \frac{x^2}{2!} - \frac{x^3}{3!} + \dots \infty = $

$1 + \frac{{\log_e x}}{{1!}} + \frac{{(\log_e x)^2}}{{2!}} + \frac{{(\log_e x)^3}}{{3!}} + \dots \infty = $

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

જો $2 \sinh x = \cosh x$ હોય,તો $x =$

$\sum_{k=1}^{\infty}(-1)^{k+1}(\frac{k(k+1)}{k!})$ નું મૂલ્ય છે :

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