$\int \frac{2}{x^{2}-a^{2}}$ is equal to:

Question

Accepted Answer

$ln|\frac{x-a}{x+a}|$

Answer

$\frac{1}{a} ln|x^{2}-a^{2}|$

Answer

$\frac{1}{2a}ln|\frac{x-a}{x+a}|$

Answer

$\frac{1}{a}ln|\frac{x-a}{x+a}|$