श्रेणी $1 + \frac{3}{2!} + \frac{7}{3!} + \frac{15}{4!} + \dots \infty$ तक का योग है

  • A
    $e(e + 1)$
  • B
    $e(1 - e)$
  • C
    $3e - 1$
  • D
    $e(e - 1)$

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Similar Questions

योग $\sum \limits_{n=1}^{\infty} \frac{2n^2+3n+4}{(2n)!}$ किसके बराबर है :

श्रेणी $\frac{1^2}{1 \cdot 2!} + \frac{1^2 + 2^2}{2 \cdot 3!} + \frac{1^2 + 2^2 + 3^2}{3 \cdot 4!} + \dots + \frac{1^2 + 2^2 + \dots + n^2}{n(n + 1)!} + \dots \infty$ का योग किसके बराबर है?

$\frac{1 + \frac{2^2}{2!} + \frac{2^4}{3!} + \frac{2^6}{4!} + \dots \infty}{1 + \frac{1}{2!} + \frac{2}{3!} + \frac{2^2}{4!} + \dots \infty} = $

$1 + \frac{a - bx}{1!} + \frac{(a - bx)^2}{2!} + \frac{(a - bx)^3}{3!} + \dots \infty = $

$1 + \frac{1 + 3}{2!} + \frac{1 + 3 + 5}{3!} + \frac{1 + 3 + 5 + 7}{4!} + \dots \infty = $

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