$\int {\frac{{{x^2}}}{{\left( {{x^2} + 1} \right)\left( {{x^2} + 4} \right)}}\,} dx$ का मान ज्ञात कीजिए।

  • A
    $ - {\tan ^{ - 1}}x + \frac{1}{3}{\tan ^{ - 1}}\frac{x}{2} + C$
  • B
    $- \frac{1}{3}{\tan ^{ - 1}}x + \frac{2}{3}{\tan ^{ - 1}}\frac{x}{2} + C$
  • C
    ${\tan ^{ - 1}}x + \frac{2}{3}{\tan ^{ - 1}}\frac{x}{2} + C$
  • D
    $\frac{1}{3}{\tan ^{ - 1}}x - \frac{2}{3}{\tan ^{ - 1}}\frac{x}{2} + C$

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यदि $\int {\frac{{2x + 3}}{{(x - 1)({x^2} + 1)}}dx = {{\log }_e}\left\{ {{{(x - 1)}^{\frac{5}{2}}}{{({x^2} + 1)}^a}} \right\}} - \frac{1}{2}{\tan ^{ - 1}}x + A$,जहाँ $A$ एक स्वैच्छिक स्थिरांक है,तो $a$ का मान ज्ञात कीजिए।

Difficult
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$\int \frac{5 x^2+3}{x^2\left(x^2-2\right)} d x=$

$\int \frac{x+1}{x(1+x e^x)^2} d x=$

$\int \frac{dx}{(x + 1)(x + 2)} = $

$ \int \frac{2 x^2-1}{x^4-x^2-20} d x $

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