જો સંકલન $\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}}\left(\frac{x^2 \cos x}{1+\pi^x}+\frac{1+\sin ^2 x}{1+e^{\sin x^{323}}}\right) d x=\frac{\pi}{4}(\pi+a)-2$ નું મૂલ્ય હોય,તો $a$ નું મૂલ્ય શોધો.

  • A
    $3$
  • B
    $-\frac{3}{2}$
  • C
    $2$
  • D
    $\frac{3}{2}$

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