જો $[\cdot]$ એ મહત્તમ પૂર્ણાંક વિધેય દર્શાવતું હોય,તો સંકલન $\int_{0}^{\pi} [\cos x] \, dx$ ની કિંમત શોધો.

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

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