જો $\alpha = \int_0^1 \left(e^{9x + 3 \tan^{-1} x}\right) \left(\frac{12 + 9x^2}{1 + x^2}\right) dx$,જ્યાં $\tan^{-1} x$ માત્ર મુખ્ય કિંમતો લે છે,તો $\left(\log_e |1 + \alpha| - \frac{3\pi}{4}\right)$ ની કિંમત શોધો.

  • A
    $6$
  • B
    $7$
  • C
    $8$
  • D
    $9$

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$\int_0^{\pi / 4} \frac{\cos ^2 x \sin ^2 x}{\left(\cos ^3 x+\sin ^3 x\right)^2} d x$ ની કિંમત શોધો.

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