$1 + \frac{2}{3!} + \frac{3}{5!} + \frac{4}{7!} + \dots \infty = \,$

  • A
    $e$
  • B
    $2e$
  • C
    $e/2$
  • D
    $e/3$

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$\frac{1}{2} + \frac{1}{4} + \frac{1}{8 \times 2!} + \frac{1}{16 \times 3!} + \frac{1}{32 \times 4!} + \dots \infty = $

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

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

ધારો કે $C(\theta) = \sum_{n=0}^{\infty} \frac{\cos(n\theta)}{n!}$. નીચેનામાંથી કયું વિધાન ખોટું છે?

$(1 + x + x^2)e^{-x}$ ના વિસ્તરણમાં $x^2$ નો સહગુણક શોધો.

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