$\frac{1}{1!} + \frac{4}{2!} + \frac{7}{3!} + \frac{10}{4!} + \dots \infty = $

  • A
    $e + 4$
  • B
    $2 + e$
  • C
    $3 + e$
  • D
    $e$

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સમીકરણ $2 \cosh 2x + 10 \sinh 2x = 5$ નો ઉકેલ શોધો.

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