What is the antiderivative of
$$\int\frac{1}{r \ln(r)} \ dr$$
I'm trying to use substitution, but substituting $u=r$ doesn't help as that just changes the variable.
What is the antiderivative of
$$\int\frac{1}{r \ln(r)} \ dr$$
I'm trying to use substitution, but substituting $u=r$ doesn't help as that just changes the variable.