$\int_0^a \frac{x \, dx}{\sqrt{a^2 + x^2}} = $

  • A
    $a(\sqrt{2} - 1)$
  • B
    $a(1 - \sqrt{2})$
  • C
    $a(1 + \sqrt{2})$
  • D
    $2a\sqrt{3}$

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यदि $(n - m)$ विषम है और $|m| \ne |n|,$ तो $\int_0^\pi {\cos mx \sin nx} \,dx$ का मान क्या है?

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$\int_{0}^{\pi/2} \frac{x + \sin x}{1 + \cos x} dx =$

यदि $\left( \int_{0}^{a} x \, dx \right) \le (a + 4)$ है,तो

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