समाकलन $\int_{1/4}^{3/4} \cos \left(2 \cot^{-1} \sqrt{\frac{1-x}{1+x}}\right) dx$ का मान ज्ञात कीजिए:

  • A
    $-1/2$
  • B
    $1/4$
  • C
    $1/2$
  • D
    $-1/4$

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$\int_{\frac{\pi}{6}}^{\frac{\pi}{4}} \frac{1}{\sin 2 x(\tan ^5 x+\cot ^5 x)} dx$ का मान है

समाकलन $\int_{\pi / 6}^{\pi / 2} \left( \frac{1+\sin 2x+\cos 2x}{\sin x+\cos x} \right) dx$ का मान किसके बराबर है?

यदि $\int_{0}^{a} \frac{dx}{1+4x^{2}} = \frac{\pi}{8}$ है,तो $a =$

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