यदि $f(x) = \frac{e^x}{1 + e^x}$,$I_1 = \int_{f(-a)}^{f(a)} x g\{x(1 - x)\} dx$,और $I_2 = \int_{f(-a)}^{f(a)} g\{x(1 - x)\} dx$ है,तो $\frac{I_2}{I_1}$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $-3$
  • C
    $-1$
  • D
    $2$

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निम्नलिखित निश्चित समाकल का मान ज्ञात कीजिए: $\int_0^{\frac{\pi}{2}} \frac{\sin ^{\frac{3}{2}} x}{\sin ^{\frac{3}{2}} x+\cos ^{\frac{3}{2}} x} d x$

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