# How do you integrate x^-1?

$\int {x}^{-} 1 \mathrm{dx} = \int \frac{1}{x} \mathrm{dx} = \ln | x | + C$.
The Standard Form $\int {x}^{n} \mathrm{dx} = {x}^{n + 1} / \left(n + 1\right)$ is not applicable here, as for n=-1, (n+1)=0;" &, we can't divide by "0#.