$\frac{\int_{0}^{\pi/2} (x \cos x + 1) e^{\sin x} dx}{\int_{0}^{\pi/2} (x \sin x + 1) e^{\cos x} dx}$ નું નિરપેક્ષ મૂલ્ય - ની બરાબર છે.

  • A
    $e$
  • B
    $\pi e$
  • C
    $e/2$
  • D
    $\pi/e$

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ધારો કે વિધેય $f(x) = \log_{4}(\log_{5}(\log_{3}(18x - x^{2} - 77)))$ નો પ્રદેશ $(a, b)$ છે. તો સંકલન $\int_{a}^{b} \frac{\sin^{3} x}{\sin^{3} x + \sin^{3}(a + b - x)} dx$ નું મૂલ્ય $.....$ છે.

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