$\int_{-\pi}^\pi \frac{2 y(1+\sin y)}{1+\cos ^2 y} d y$ નું મૂલ્ય શોધો:

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

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$\int_{-\pi/6}^{\pi/6} \left( \frac{\pi + 4x^{11}}{1 - \sin(|x| + \pi/6)} \right) dx$ નું મૂલ્ય શોધો: ($\pi$ માં)

જો $f(x) = \frac{e^x}{1+e^x}$, $l_1 = \int_{f(-a)}^{f(a)} x g(x(1-x)) dx$ અને $l_2 = \int_{f(-a)}^{f(a)} g(x(1-x)) dx$ હોય, તો $\frac{l_2}{l_1}$ ની કિંમત શોધો.

$\int_{\pi /4}^{3\pi /4} \frac{\phi}{1 + \sin \phi} \, d\phi$ નું મૂલ્ય શું છે?

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