Integral of $$\frac{1}{x\sqrt{x^2-a^2}}$$

Rarely Tested

Integral of $$\frac{1}{x\sqrt{x^2-a^2}}$$

For $$a>0$$:

$$\int\frac{dx}{x\sqrt{x^2-a^2}}=\frac{1}{a}\sec^{-1}\left|\frac{x}{a}\right|+C$$

Usage

- Used for standard integrals involving a difference-of-squares radical.

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