$\frac{2}{1!} + \frac{4}{3!} + \frac{6}{5!} + \frac{8}{7!} + \dots \infty = $

  • A
    $1/e$
  • B
    $e$
  • C
    $2e$
  • D
    $3e$

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Similar Questions

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

यदि $y = 1 + \frac{x}{1!} + \frac{x^2}{2!} + \frac{x^3}{3!} + \dots \infty$ है,तो $x = $

$\sum_{n=1}^{\infty} \frac{2n}{(2n+1)!}$ का मान ज्ञात कीजिए।

$(e^x - 1)(e^{-x} + 1)$ के विस्तार में,$x^3$ का गुणांक है

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