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

  • A
    $\frac{1}{a^2 - b^2} \left[ \frac{1}{b} \tan^{-1} \left( \frac{x}{b} \right) - \frac{1}{a} \tan^{-1} \left( \frac{x}{a} \right) \right] + c$
  • B
    $\frac{1}{b^2 - a^2} \left[ \frac{1}{b} \tan^{-1} \left( \frac{x}{b} \right) - \frac{1}{a} \tan^{-1} \left( \frac{x}{a} \right) \right] + c$
  • C
    $\frac{1}{b} \tan^{-1} \left( \frac{x}{b} \right) - \frac{1}{a} \tan^{-1} \left( \frac{x}{a} \right) + c$
  • D
    $\frac{1}{a} \tan^{-1} \left( \frac{x}{a} \right) - \frac{1}{b} \tan^{-1} \left( \frac{x}{b} \right) + c$

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परिमेय फलन का समाकलन कीजिए: $\frac{1}{x^{4}-1}$

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

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

$\int \frac{dx}{(x^2+1)(x^2+4)} = $

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

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