$\int_1^2 \left( \tan ^{-1}\left(\frac{x}{x^2+1}\right)+\tan ^{-1}\left(\frac{x^2+1}{x}\right) \right) d x =$

  • A
    $\frac{\pi}{4}$
  • B
    $\frac{3 \pi}{4}$
  • C
    $\frac{\pi}{4}$
  • D
    $\frac{\pi}{2}$

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સમીકરણ $\int_x^1(1-t) dt = \frac{1}{2}$ નું સમાધાન કરતી $x$ ની ધન કિંમત કઈ છે?

$\int_0^{x} \frac{t^2}{\sqrt{a^2+t^2}} dt =$

$\int_0^1 4 x^3 \left\{ \frac{d^2}{d x^2} (1-x^2)^5 \right\} d x$ નું મૂલ્ય શોધો.

$\int_{\pi /4}^{\pi /2} \csc^2 x \, dx = $

$\int_{ - \pi /2}^{\pi /2} {\sqrt {\frac{1}{2}(1 - \cos 2x)} } \,dx = $

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