When you have the opportunity to use $\displaystyle \ln$ rules, then do you always use it? It seems to be the case in Calculus and Diff. Equations.

For instance, when getting the integrating factor (in Diff. Equations), then you often go from $\displaystyle e^{5\ln(b)} = e^{\ln (b)^{5}} = b^{5}$ etc...

In ln differentiation, if you see $\displaystyle \ln x^{2}$ then you make it $\displaystyle 2 \ln x$