$\int \frac{x \, dx}{(x^2 - a^2)(x^2 - b^2)} = $

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

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