Notes from 3rd class.

Here are some images related to problem 2.87, which we will discuss in today's class (Friday, April 6). Using Wolfram Alpha, especially the graphing aspects, can help you to visualize and understand the solutions to problems; these images and solutions are a good complement to solving using step-by-step algebra. (That is, they are good together.)  Notes from our 3rd class are also shown below. (click where it says "read more".)

Notes from 3rd class: