यदि $\int \frac{d x}{3-2 \cos 2 x}=\frac{\tan ^{-1}(f(x))}{\sqrt{5}}+c$,(जहाँ $c$ समाकलन का स्थिरांक है),तो $f(\pi / 4)$ का मान ज्ञात कीजिए:

  • A
    $-\sqrt{5}$
  • B
    $\sqrt{5}$
  • C
    $\frac{2}{\sqrt{5}}$
  • D
    $\frac{1}{\sqrt{5}}$

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यदि $\int {\frac{{\tan x}}{{1 + \tan x + {{\tan }^2}x}}dx} = x - \frac{K}{{\sqrt A }}{\tan ^{ - 1}}\left( {\frac{{K\tan x + 1}}{{\sqrt A }}} \right) + C,$ ($C$ समाकलन का एक स्थिरांक है),तो क्रमित युग्म $(K, A)$ बराबर है:

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

$\int \frac{3\sin x + 2\cos x}{3\cos x + 2\sin x} \, dx = $

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$\int \left[ \log (1+\cos x) - x \tan \left( \frac{x}{2} \right) \right] dx =$

यदि $\int \frac{2 \, dx}{\sqrt{\cot^2 x - \tan^2 x}} = -\sqrt{f(x)} + c$ है, तो $f(x) =$

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