$\sum\limits_{n = 1}^\infty {\frac{{^n{C_0} + ... + ^n{C_n}}}{{^n{P_n}}}} $ ની કિંમત શોધો.

  • A
    $e^2$
  • B
    $e$
  • C
    $e^2 - 1$
  • D
    $e - 1$

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${e^{e^x}}$ ના વિસ્તરણમાં ${x^r}$ નો સહગુણક શું છે?

$1 + \frac{1 + 2}{1!} + \frac{1 + 2 + 3}{2!} + \frac{1 + 2 + 3 + 4}{3!} + \dots \infty = $

$\frac{1-2x-x^2}{e^{-x}}$ ના વિસ્તરણમાં $x^k$ નો સહગુણક શું છે?

$a>0, x \in R$ માટે પદાવલિ $\begin{aligned} & 1+x \log _e a+\frac{x^2}{2 !}\left(\log _e a\right)^2+\frac{x^3}{3 !}\left(\log _e a\right)^3+\ldots \end{aligned}$ કોના બરાબર છે?

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