જો $M = \int_{0}^{\pi / 2} \frac{\cos x}{x+2} dx$ અને $N = \int_{0}^{\frac{\pi}{4}} \frac{\sin x \cos x}{(x+1)^{2}} dx$ હોય, તો $M-N$ ની કિંમત શોધો.

  • A
    $\pi$
  • B
    $\frac{\pi}{4}$
  • C
    $\frac{2}{\pi-4}$
  • D
    $\frac{2}{\pi+4}$

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જો $f(x) = \frac{e^x}{1 + e^x}$,$I_1 = \int_{f(-a)}^{f(a)} x g\{x(1 - x)\} dx$,અને $I_2 = \int_{f(-a)}^{f(a)} g\{x(1 - x)\} dx$ હોય,તો $\frac{I_2}{I_1}$ ની કિંમત શોધો.

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