1. This section discusses how to find derivatives of functions involving logarithms, including ln(u) and logb(u). It outlines the differentiation formulas for these functions and explains logarithmic differentiation. 2. Logarithmic differentiation can be used to differentiate functions that involve products, quotients, or powers, by taking the natural log of both sides, simplifying using properties of logarithms, and then differentiating. 3. Logarithmic differentiation is particularly useful for differentiating functions of the form v/u, where both u and v are functions of the variable. Examples are provided.