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

  • A
    $e^x - e^y$
  • B
    $e^{x^2} - e^{y^2}$
  • C
    $2 + e^{x^2} - e^{y^2}$
  • D
    $\frac{e^x - e^y}{2}$

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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 = $

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

यदि $2 \sinh x = \cosh x$ है,तो $x =$

मान लीजिए $S_{n} = 1 \cdot (n-1) + 2 \cdot (n-2) + 3 \cdot (n-3) + \dots + (n-1) \cdot 1$,$n \geq 4$ के लिए। योग $\sum_{n=4}^{\infty} \left( \frac{2 S_{n}}{n!} - \frac{1}{(n-2)!} \right)$ किसके बराबर है?

श्रेणी $\frac{1}{2!} - \frac{1}{3!} + \frac{1}{4!} - \dots$ का योग है

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