# How do you find the indefinite integral of int 5/x?

$5 \ln \left(x\right) + C$
Think about derivatives that could equal $\frac{1}{x}$
We know that $\frac{d}{\mathrm{dx}} \ln x = \frac{1}{x}$
$5 \int \frac{1}{x} \mathrm{dx}$; $5 \left(\ln x\right) + C$