$\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \frac{x^2 \cos x}{1+e^x} d x$ का मान क्या है?

  • A
    $\frac{\pi^2}{4}-2$
  • B
    $\frac{\pi^2}{4}+2$
  • C
    $\pi^2-e^{\frac{\pi}{2}}$
  • D
    $\pi^2+e^{\frac{\pi}{2}}$

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