यदि $\int {\sqrt {1 + \sin \frac{x}{2}} } dx = A\, \sin\, \left( {\frac{x}{4} - \frac{\pi }{4}} \right) + C$ है,तो $A$ का मान ज्ञात कीजिए:

  • A
    $2\,\sqrt{2}$
  • B
    $\sqrt{2}$
  • C
    $\frac{1}{\sqrt{2}}$
  • D
    $4\,\sqrt{2}$

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$\int \frac{\operatorname{cosec}^2 x}{\sec ^2 x} \, dx = $ . . . . . . $+ C$.

यदि $\int \frac{x}{x \tan x+1} \, dx = \log f(x) + k$ है,तो $f\left(\frac{\pi}{4}\right) =$

$\int \sqrt{1+\cos x} \, dx$ का मान ज्ञात कीजिए।

$\int \frac{x^5}{x^2+1} \, dx =$

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