$\frac{a + bx + cx^2}{e^x}$ ના વિસ્તરણમાં,$x^n$ નો સહગુણક શું છે?

  • A
    $\frac{a(-1)^n}{n!} + \frac{b(-1)^{n-1}}{(n-1)!} + \frac{c(-1)^{n-2}}{(n-2)!}$
  • B
    $\frac{a}{n!} + \frac{b}{(n-1)!} + \frac{c}{(n-2)!}$
  • C
    $\frac{(-1)^n}{n!} + \frac{(-1)^{n-1}}{(n-1)!} + \frac{(-1)^{n-2}}{(n-2)!}$
  • D
    આમાંથી કોઈ નહીં

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જો $y = 1 + \frac{x}{1!} + \frac{x^2}{2!} + \frac{x^3}{3!} + \dots \infty$ હોય,તો $x = $

$3 + \frac{5}{1!} + \frac{7}{2!} + \frac{9}{3!} + \dots \infty = $

$\frac{1 + x}{1!} + \frac{(1 + x)^2}{2!} + \frac{(1 + x)^3}{3!} + \dots$ ના વિસ્તરણમાં $x^n$ નો સહગુણક શું હશે?

$\frac{1 - 2x + 3x^2}{e^x}$ ના વિસ્તરણમાં,$x^5$ નો સહગુણક શું હશે?

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