Application of Integration--Volumes by Disks/Washers

preview_player
Показать описание
Sample problems and introduction
Рекомендации по теме
Комментарии
Автор

thanks! EXTREMELY very helpful. I'm currently reviewing for preparation of my calculus AP test. I will be binging your videos for the next couple of weeks haha! :)

kathyho
Автор

At the 2:27 mark, with respect to the graph, wouldn't it have been clearer to denote the Area as pi*y^2 instead of pi*x^2?

yankeehank
Автор

For anyone trying to get help from this: the one with e^x from [0, 2] is actually a WASHER question, not a disk one. This guy doesn't know what he's doing. If you picture it rotated about the line, then the shape will have a cylinder cut out of it, so therefore the cross sections will be washers. Then, it would be pi *(integral from 0, 2) R^2 - r^2 dx. Which is e^2x - (-1)^2 dx.

Alex-ijkm