This document provides examples of calculus problems involving taking derivatives of functions written in terms of y and finding derivatives implicitly. It includes: 1) Three practice problems for taking the derivative of functions written in terms of x and rewriting them in terms of y. 2) Examples and steps for taking the derivative implicitly when given an equation involving both x and y: find the derivative of y by isolating y' and solving for it. 3) The objective is to practice taking derivatives implicitly.