Recent content by BrandonATC

thank you, just wondering how do you show the answer is -4pi?

The question is Let r=r(x,y,z) where it is the distance from a point O. Evaluate \oint\nabla(1/r)*ndS (where * is the dot product) over the ellipsoid x^2/4 +y^2/9+z^2/25=1 I thought the answer was 0 since the ellipsoid is a simply connected region in R^3 and the...