$\int_0^1 \sin \left(2 \tan ^{-1} \sqrt{\frac{1+x}{1-x}}\right) d x$ ની કિંમત શોધો :

  • A
    $\frac{\pi}{6}$
  • B
    $\frac{\pi}{4}$
  • C
    $\frac{\pi}{2}$
  • D
    $\pi$

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સરવાળાની મર્યાદા તરીકે $\int_{0}^{2}(x^{2}+3) dx$ ની કિંમત શોધો.

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