यदि $f(x) = f(\Pi + e - x)$ और $\int_{e}^{\Pi} f(x) dx = \frac{2}{e + \Pi}$ है,तो $\int_{e}^{\Pi} x f(x) dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{\Pi + e}{2}$
  • B
    $\frac{\Pi - e}{2}$
  • C
    $\Pi - e$
  • D
    $1$

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