I have been hung up on this integral: (μ /4∏ε) ∫ dz/(√s^2 + z^2)
The Attempt at a Solution
i have tried a couple of different u-substitutions, and none are getting me anywhere. I do not that partial fractions, or by parts would help either. I know what the integral equals (integral table), but i should like to know how to calculate it.