यदि $f(x)=\sin ^6 x+\cos ^6 x+2 \sin ^3 x \cos ^3 x$ है, तो $\int_0^{\pi / 4} \frac{\sin ^2 2 x}{f(x)} d x=$

  • A
    $2$
  • B
    $\frac{2}{3}$
  • C
    $\frac{-2}{3}$
  • D
    $\frac{1}{6}$

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$\int_0^{\pi / 2} \frac{\pi \sin x}{1+\cos ^2 x} d x$ का मान ज्ञात कीजिए।

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यदि $I_n = \int_0^{\frac{\pi}{2}} \cos^n x \cos(nx) dx$ है, तो $I_1, I_2, I_3, \ldots$ किसमें हैं?

यदि $[x]$ वह महत्तम पूर्णांक है जो $x$ से अधिक नहीं है,तो $\int_{-0.5}^{1.5} x^2[x] d x=$

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