$\int \limits_{0}^{\pi} \frac{e^{\cos x} \sin x}{\left(1+\cos ^{2} x\right)\left(e^{\cos x}+e^{-\cos x}\right)} d x$ નું મૂલ્ય શોધો.

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

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જો $h(a) = h(b)$ હોય,તો સંકલન $\int_a^b {[f(g(h(x)))]^{-1} f'(g(h(x))) \cdot g'(h(x)) \cdot h'(x) \, dx} = $ નું મૂલ્ય શોધો.

$\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \log \left(\frac{2-\sin \theta}{2+\sin \theta}\right) d \theta$ ની કિંમત શોધો.

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