$\int_0^{\pi /2} {\frac{{dx}}{{2 + \cos x}}} = $

  • A
    $\frac{1}{{\sqrt 3 }}{\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 3 }}} \right)$
  • B
    $\sqrt 3 {\tan ^{ - 1}}\left( {\sqrt 3 } \right)$
  • C
    $\frac{2}{{\sqrt 3 }}{\tan ^{ - 1}}\left( {\frac{1}{{\sqrt 3 }}} \right)$
  • D
    $2\sqrt 3 {\tan ^{ - 1}}\left( {\sqrt 3 } \right)$

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ધારો કે $f(x) = \max \left\{3, x^2, \frac{1}{x^2}\right\}$ એ $\frac{1}{2} \leq x \leq 2$ માટે છે. તો,સંકલન $\int_{1/2}^2 f(x) dx$ નું મૂલ્ય શોધો.

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