1. The problem statement, all variables and given/known data I am unsure how to differentiate ln(x). 2. Relevant equations [tex]\int[/tex] dx/ (x logex) 3. The attempt at a solution I let u = logex So it became: [tex]\int[/tex] x-1u-1dx To integrate I now need to find du/dx... which means differentiate ln(x). How does this work out?