$\int {\frac{{\sqrt {{x^2} + 1} [\log ({x^2} + 1) - 2\log x]}}{{{x^4}}}} dx$ ની કિંમત શોધો.

  • A
    $\frac{1}{3}{\left( {1 + \frac{1}{{{x^2}}}} \right)^{1/2}}\left[ {\log \left( {1 + \frac{1}{{{x^2}}}} \right) + \frac{2}{3}} \right] + c$
  • B
    $ - \frac{1}{3}{\left( {1 + \frac{1}{{{x^2}}}} \right)^{3/2}}\left[ {\log \left( {1 + \frac{1}{{{x^2}}}} \right) - \frac{2}{3}} \right] + c$
  • C
    $\frac{2}{3}{\left( {1 + \frac{1}{{{x^2}}}} \right)^{3/2}}\left[ {\log \left( {1 + \frac{1}{{{x^2}}}} \right) + \frac{2}{3}} \right] + c$
  • D
    આમાંથી કોઈ નહીં

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જો $f(x) = \int \frac{x}{(x^2+4)(x^2+9)} dx$ અને $f(0) = \frac{1}{5} \log(\frac{2}{3})$ હોય, તો $f(1) = $

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