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

  • A
    $\frac{1}{5} \log \left| \frac{x+2}{\sqrt{x^2+1}} \right| - \frac{1}{5} \tan^{-1} x + c$
  • B
    $\frac{1}{5} \log \left| \frac{x+2}{\sqrt{x^2+1}} \right| + \frac{1}{5} \tan^{-1} x + c$
  • C
    $\frac{1}{5} \log \left| \frac{x^2+1}{x+2} \right| - \frac{1}{5} \tan^{-1} x + c$
  • D
    $\frac{1}{5} \log \left| \frac{x+2}{x^2+1} \right| - \frac{2}{5} \tan^{-1} x + c$

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परिमेय फलन का समाकलन कीजिए: $\frac{x}{(x-1)(x-2)(x-3)}$

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