Unformatted text preview: (b) If you are rotating about something parallel to the xaxis R and r need to be in terms of x 6. Determine your limits of integration. (a) If you are rotating about something parallel to the yaxis your limits will be ycoordinates. (b) If you are rotating about something parallel to the xaxis your limits will be xcoordinates. 7. If you have a disk use (a) b R a πR 2 dy if you are rotating about something parallel to the yaxis. (b) b R a πR 2 dx if you are rotating about something parallel to the xaxis 8. If you have a washer (a) b R a π [ R 2r 2 ] dy if you are rotating about something parallel to the yaxis. (b) b R a π [ R 2r 2 ] dx if you are rotating about something parallel to the xaxis...
View
Full Document
 Spring '08
 LLHanks
 Calculus, Cartesian Coordinate System, Rotation, Euclidean geometry, xaxis your lines

Click to edit the document details