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Algebraic! Group TitleBest ResponseYou've already chosen the best response.0
what are r and sigma representing.
 one year ago

Carl_Pham Group TitleBest ResponseYou've already chosen the best response.0
r is probably the vector from the origin to any point on the surface, and sigma is probably the unit vector normal to the surface at that point.
 one year ago

gerryliyana Group TitleBest ResponseYou've already chosen the best response.0
@CliffSedge can you help me please
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Been too long since I've done integrals like these. I'll have to refresh my memory first.
 one year ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.0
dw:1350687107096:dw
 one year ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.0
dw:1350687145672:dw
 one year ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.0
So when it says that \[ \vec{r}\cdot d\vec{\sigma}=0 \] for three of the surfaces, can you see which three this pertains to and why?
 one year ago

Jemurray3 Group TitleBest ResponseYou've already chosen the best response.0
when, in general, is a dot product zero?
 one year ago
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