Estimating Area with Rectangles Part 1 of 2 Calculus 1 AB

I show you how to estimate the area bound by a function and the x-axis on a closed interval [a,b] using rectangles. Depending on whether you inscribe or circumscribe your rectangles you will find the upper sum (over estimate the area) or the lower sum (underestimate the area). The more rectangles used the better your estimate. This video is the first part of my full length video "Area of a Plane w/Rectangles Limit of Infinite Sum" Check out http://www.ProfRobBob.com/, there you will find my lessons organized by class/subject and then by topics within each class. Find free review test, useful notes and more at http://www.mathplane.com/ If you'd like to make a donation to support my efforts look for the "Tip the Teacher" button on my channel's homepage    / profrobbob