यदि $\int \frac{dx}{x (\sqrt{x^4 - 1})} = \frac{1}{k} \sec^{-1} (x^k)$ है,तो $k$ का मान =

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

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$\int \frac{dx}{\sqrt{x}(x + 9)}$ का मान ज्ञात कीजिए।

$\int \frac{\sin (\tan ^{-1} x)}{1+x^2} d x=$ . . . . . . $+C$.

$\int \frac{dx}{\sqrt{e^x-1}} = 2 \tan^{-1}(f(x)) + c$,जहाँ $x > 0$ और $c$ समाकलन का एक स्थिरांक है,तो $f(x)$ है

$\int \frac{dx}{5 + 4\cos x} = $

यदि $x \neq -1$ और $\int \frac{x^3+x^2-x-1}{(x^5+x^4+3x^3+3x^2+x+1) \tan^{-1}(\frac{x^2+1}{x})} dx = A \log(f(x)) + C$ है, तो $A - \tan(f(2)) = $

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