$\int \frac{dx}{4\sin^2 x + 5\cos^2 x} = $

  • A
    $\frac{1}{\sqrt{5}} \tan^{-1} \left( \frac{2\tan x}{\sqrt{5}} \right) + c$
  • B
    $\frac{1}{\sqrt{5}} \tan^{-1} \left( \frac{\tan x}{\sqrt{5}} \right) + c$
  • C
    $\frac{1}{2\sqrt{5}} \tan^{-1} \left( \frac{2\tan x}{\sqrt{5}} \right) + c$
  • D
    इनमें से कोई नहीं

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यदि $I=\int \frac{\sin x+\sin ^3 x}{\cos 2 x} \,d x=P \cos x+Q \log \left|\frac{\sqrt{2} \cos x-1}{\sqrt{2} \cos x+1}\right|+c,$ (जहाँ $c$ समाकलन का एक स्थिरांक है),तो $P$ और $Q$ के मान क्रमशः क्या हैं?

फलन का समाकलन कीजिए: $\frac{x+2}{\sqrt{x^{2}-1}}$

मूल्यांकन करें: $\int \frac{2 \cos x+1}{(2+\cos x)^2} d x - \frac{\sin x}{2+\cos x}$

यदि $\int(x^6+x^4+x^2) \sqrt{2x^4+3x^2+6} dx = f(x) + c$ है,तो $f(3) =$

$\int \frac{d x}{\left(2 a x+x^2\right)^{\frac{3}{2}}} = $

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