MCQ
$x>a \int \frac{d x}{x^2-a^2}+k$
- ✓$\frac{1}{2 a} \log \frac{x-a}{x+a}+k$
- B$\frac{1}{2 a} \log \frac{x+a}{x-a}+k$
- C$\frac{1}{a} \log \left(x^2-a^2\right)+k$
- D$\log \left(x+\sqrt{x^2-a^2}\right)+k$
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