निश्चित समाकल का मान ज्ञात कीजिए: $\int_{0}^{3} \sqrt{9 - x^2} dx$ ।

  • A
    $\frac{3\pi}{4}$
  • B
    $\frac{9\pi}{4}$
  • C
    $\frac{7\pi}{4}$
  • D
    $\frac{5\pi}{4}$

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यदि $I = \int_{0}^{\frac{\pi}{6}} \frac{\cos x}{x} dx$ और $J = \int_{\frac{\pi}{3}}^{\frac{\pi}{2}} \frac{\cos x}{x} dx$ है,तो निम्नलिखित में से कौन सा सही है?

$\int_0^{\frac{\pi}{2}}|\sin x-\cos x| d x$ का मान क्या है?

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समाकलन $\int_{0}^{\frac{\pi}{2}} \sqrt{\sin \phi} \cos ^{5} \phi \,d \phi$ का मान ज्ञात कीजिए।

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