$\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} f(x) dx$ ની કિંમત શોધો,જ્યાં $f(x) = \sin |x| + \cos |x|$ અને $x \in [-\frac{\pi}{2}, \frac{\pi}{2}]$.

  • A
    $0$
  • B
    $8$
  • C
    $4$
  • D
    $2$

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ધારો કે ${I_1} = \int_a^{\pi - a} {xf(\sin x)dx}$ અને ${I_2} = \int_a^{\pi - a} {f(\sin x)dx}$,તો ${I_2}$ કોના બરાબર છે?

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