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

  • A
    $\cot x$
  • B
    $\sin 2x$
  • C
    $\cos 2x$
  • D
    $\tan x$

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फलन का समाकलन कीजिए: $\frac{x+2}{\sqrt{4x-x^2}}$

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

$\begin{aligned} & \int \frac{x \, dx}{\sqrt[15]{\left(1+x^2\right)^{12}\left(2+x^2\right)^{18}}}=\alpha\left(\frac{1+x^2}{2+x^2}\right)^{1 / n}+C \Rightarrow \\ & \frac{n}{\alpha}= \end{aligned}$

यदि $\int \frac{\cos 4x + 1}{\cot x - \tan x} dx = k \cos 4x + c$ है,तो $k$ का मान ज्ञात कीजिए।

यदि $\int \frac{2 x^2+5 x+9}{\sqrt{x^2+x+1}} d x=x \sqrt{x^2+x+1}+\alpha \sqrt{x^2+x+1}+\beta \log _{ e }\left| x +\frac{1}{2}+\sqrt{ x ^2+ x +1}\right|+ C$ है,जहाँ $C$ समाकलन स्थिरांक है,तो $\alpha+2 \beta$ का मान . . . . . . है।

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