$\int \frac{x^2-4}{x^4+9 x^2+16} \cdot \,d x=\tan ^{-1}(f(x))+c$ (जहाँ $c$ समाकलन का एक स्थिरांक है),तो $f(2)$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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यदि $\int \frac{dx}{(1+\sqrt{x}) \sqrt{x-x^2}} = \frac{A \sqrt{x}}{\sqrt{1-x}} + \frac{B}{\sqrt{1-x}} + C$, जहाँ $C$ एक वास्तविक स्थिरांक है, तो $A+B$ का मान ज्ञात कीजिए।

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