यदि $k \in (1, \infty)$ है, तो $\int \frac{1}{1+k \cos x} d x=$

  • A
    $\frac{2}{\sqrt{1+k^2}} \tan ^{-1}\left(\sqrt{\frac{1-k}{1+k}} \tan \frac{x}{2}\right)+C$
  • B
    $\frac{1}{\sqrt{k^2-1}} \log \left(\frac{\sqrt{k+1}+\sqrt{k-1} \tan \frac{x}{2}}{\sqrt{k+1}-\sqrt{k-1} \tan \frac{x}{2}}\right)+C$
  • C
    $\frac{1}{\sqrt{k^2+1}} \log \left(\frac{\sqrt{k+1}+\sqrt{k-1} \tan \frac{x}{2}}{\sqrt{k+1}-\sqrt{k-1} \tan \frac{x}{2}}\right)+C$
  • D
    $\frac{1}{\sqrt{k^2-1}} \tan ^{-1}\left(\frac{\sqrt{k-1} \cos \frac{x}{2}+\sqrt{k-1} \sin \frac{x}{2}}{\sqrt{k+1} \cos \frac{x}{2}-\sqrt{k-1} \sin \frac{x}{2}}\right)+C$

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$0 < x < 1$ के लिए,समाकलन $\int [\operatorname{Tan}^{-1}(1-x+x^2) + \operatorname{Tan}^{-1}(1-x)] dx$ का मान ज्ञात कीजिए।

निम्नलिखित कथनों का अवलोकन करें:
$A: \int \left(\frac{x^2-1}{x^2}\right) e^{\frac{x^2+1}{x}} d x = e^{\frac{x^2+1}{x}} + c$
$R: \int f^{\prime}(x) e^{f(x)} d x = f(x) + c$
तो निम्नलिखित में से कौन सा सत्य है?

यदि $\int \frac{5 \tan x}{\tan x-2} d x = \alpha x + \beta \log |\sin x - 2 \cos x| + \gamma$ है,तो $\alpha - \beta =$

किसी भी पूर्णांक $n \geq 2$ के लिए,यदि $I_n = \int \cot^n x \, dx$ है,तो $I_5 =$

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