$\frac{e^2 + 1}{2e} = $

  • A
    $1 + \frac{2}{2!} + \frac{2^2}{3!} + \frac{2^3}{4!} + \dots \infty $
  • B
    $1 + \frac{1}{2!} + \frac{1}{4!} + \frac{1}{6!} + \dots \infty $
  • C
    $\frac{1}{2}\left( 1 + \frac{1}{2!} + \frac{1}{4!} + \dots \infty \right)$
  • D
    $\frac{1}{2}\left( 1 + \frac{1}{1!} + \frac{1}{2!} + \frac{1}{3!} + \dots \infty \right)$

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$\frac{e^{4x} - 1}{e^{2x}}$ के विस्तार में,$x^2$ का गुणांक क्या है?

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प्रत्येक वास्तविक संख्या $x$ के लिए,मान लीजिए $f(x) = \frac{x}{1!} + \frac{3}{2!} x^2 + \frac{7}{3!} x^3 + \frac{15}{4!} x^4 + \dots$. तो समीकरण $f(x) = 0$ के

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