જો ${T_n} = \frac{{{3^n}}}{{2(n!)}} - \frac{1}{{2(n!)}}$ હોય,તો ${S_\infty } = $

  • A
    $\frac{{{e^3} - 1}}{2}$
  • B
    $\frac{{{e^3} - e}}{2}$
  • C
    $\frac{{e - 3}}{2}$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

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

$\frac{e^{5x} + e^x}{e^{3x}}$ ના વિસ્તરણમાં,$x^4$ નો સહગુણક શું છે?

$1 + \frac{4^2}{3!} + \frac{4^4}{5!} + \dots \infty = $

$(2+3x)e^{-x}$ ના વિસ્તરણમાં $x^{10}$ નો સહગુણક શું છે?

$b = 1 + \frac{{}^1 C_0 + {}^1 C_1}{1!} + \frac{{}^2 C_0 + {}^2 C_1 + {}^2 C_2}{2!} + \frac{{}^3 C_0 + {}^3 C_1 + {}^3 C_2 + {}^3 C_3}{3!} + \ldots$
ધારો કે $a = 1 + \frac{{}^2 C_2}{3!} + \frac{{}^3 C_2}{4!} + \frac{{}^4 C_2}{5!} + \ldots$. તો $\frac{2b}{a^2}$ ની કિંમત શોધો.

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