$\int_0^3 \frac{3x+1}{x^2+9} dx$ का मान ज्ञात कीजिए :

  • A
    $\log (2 \sqrt{2})+\frac{\pi}{12}$
  • B
    $\log (2 \sqrt{2})+\frac{\pi}{2}$
  • C
    $\log (2 \sqrt{2})+\frac{\pi}{6}$
  • D
    $\log (2 \sqrt{2})+\frac{\pi}{3}$

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$\int\limits_0^1 {x\,\ln \left( {1 + \frac{x}{2}} \right)\,dx} =$

$\int_0^\infty {\frac{{x\,dx}}{{(1 + x)(1 + {x^2})}}} = $

Difficult
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$\int_0^1 x \left|x - \frac{1}{2}\right| dx = $

यदि $f(t) = \int_{-t}^t \frac{e^{-|x|}}{2} dx$ है, तो $\lim_{t \rightarrow \infty} f(t)$ का मान ज्ञात कीजिए।

यदि $\theta_{1}$ और $\theta_{2}$ क्रमशः $(0, 2\pi) - \{\pi\}$ में $\theta$ के सबसे छोटे और सबसे बड़े मान हैं जो समीकरण $2 \cot^{2} \theta - \frac{5}{\sin \theta} + 4 = 0$ को संतुष्ट करते हैं,तो $\int_{\theta_{1}}^{\theta_{2}} \cos^{2} 3\theta \, d\theta$ का मान ज्ञात कीजिए।

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