समाकल $\int_{1}^{2} e^{x} \cdot x^{x}(1 + \log_{e} x + 1) dx$ का मान ज्ञात कीजिए।

  • A
    $e(4e + 1)$
  • B
    $e(2e - 1)$
  • C
    $4e^{2} - e$
  • D
    $e(4e - 1)$

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यदि $\int {{e^{{x^2}}}\left( {2 - \frac{1}{{{x^2}}}} \right)dx = {e^{{x^2}}}f(x) + C} $ और $f\left( {\frac{1}{2}} \right) = 2$ है,तो $f(1)$ का मान ज्ञात कीजिए (जहाँ $C$ एक स्वेच्छ अचर है)।

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$\int \frac{e^{\tan ^{-1} x}}{1+x^2}\left[\left(\sec ^{-1} \sqrt{1+x^2}\right)^2+\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)\right] d x=$

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