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

  • A
    $e^x$
  • B
    $e^{-x}$
  • C
    $e$
  • D
    $e^{x^2}$

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श्रेणी $\frac{2}{1!} + \frac{6}{2!} + \frac{12}{3!} + \frac{20}{4!} + \dots$ का योग क्या है?

$(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 = $

$\frac{a + bx + cx^2}{e^x}$ के विस्तार में,$x^n$ का गुणांक क्या है?

$\frac{1}{2!} + \frac{1+2}{3!} + \frac{1+2+3}{4!} + \ldots$ का मान ज्ञात कीजिए :

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

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