$\int_{0}^{1} \frac{\tan^{-1} x}{1 + x^2} dx$ का मान है

  • A
    $\pi / 4$
  • B
    $\pi^2 / 32$
  • C
    $1$
  • D
    इनमें से कोई नहीं

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यदि $\alpha = \int_0^1 \left(e^{9x + 3 \tan^{-1} x}\right) \left(\frac{12 + 9x^2}{1 + x^2}\right) dx$,जहाँ $\tan^{-1} x$ केवल मुख्य मान लेता है,तो $\left(\log_e |1 + \alpha| - \frac{3\pi}{4}\right)$ का मान है

$\int_{\log _e 2}^x \frac{d t}{\sqrt{e^t-1}}=\frac{\pi}{6} \Rightarrow x=$

निम्नलिखित में से कौन सा/से सही है/हैं?

$\int_0^1 \frac{1}{2+\sqrt{x}} \, dx =$

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