$n > 0$ के लिए,$\int_0^{2\pi } {\frac{{x{{\sin }^{2n}}x}}{{{{\sin }^{2n}}x + {{\cos }^{2n}}x}}\,dx = } $

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

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$\int_0^\pi {{e^{{{\cos }^2}x}}{{\cos }^5}3x} \,dx$ का मान है

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$\int_0^{\frac{\pi}{4}} \frac{\cos ^2 x}{\cos ^2 x+4 \sin ^2 x} d x=$

यदि $f(x) = f(\Pi + e - x)$ और $\int_{e}^{\Pi} f(x) dx = \frac{2}{e + \Pi}$ है,तो $\int_{e}^{\Pi} x f(x) dx$ का मान ज्ञात कीजिए।

यदि $[\cdot]$ महत्तम पूर्णांक फलन को दर्शाता है,तो समाकलन $\int_{0}^{\pi} [\cos x] \, dx$ का मान ज्ञात कीजिए।

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