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...
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This note was uploaded on 05/04/2008 for the course MATH 1206 taught by Professor Llhanks during the Spring '08 term at Virginia Tech.
 Spring '08
 LLHanks
 Calculus

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