$\int_0^{\pi /3} \cos 3x \, dx = $

  • A
    $0$
  • B
    $\frac{1}{3}$
  • C
    $\frac{\pi}{3}$
  • D
    $\frac{\pi}{6}$

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निश्चित समाकल $\int_{-1}^{1}(x+1) d x$ का मान ज्ञात कीजिए।

निश्चित समाकलन $\int_{0}^{1} \frac{d x}{1+x^{2}}$ का मान ज्ञात कीजिए।

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_0^1 \frac{x^4+1}{x^6+1} dx = $

$\int_0^{\pi /2} {\sin x\,\sin 2x} \, dx$ का सही मूल्यांकन है

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