દરેક ધન પૂર્ણાંક $n$ માટે,$f_n(x) = \min\left(\frac{x^n}{n!}, \frac{(1-x)^n}{n!}\right)$ વ્યાખ્યાયિત કરો,જ્યાં $0 \leq x \leq 1$. ધારો કે $I_n = \int_{0}^{1} f_n(x) dx, n \geq 1$. તો,$\sum_{n=1}^{\infty} I_n$ ની કિંમત શોધો.

  • A
    $2\sqrt{e} - 3$
  • B
    $2\sqrt{e} - 2$
  • C
    $2\sqrt{e} - 1$
  • D
    $2\sqrt{e}$

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