मान लीजिए $2f(x) + f(-x) = \frac{1}{x} \sin \left( x - \frac{1}{x} \right)$ है,तो $\int_{1/e}^{e} f(x) dx$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $e + \pi$
  • C
    $e + \frac{1}{e}$
  • D
    $2e$

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