Posted by alana on .
use spherical coordinates to evaluate the triple integral of
(e^(x^2+y^2+z^2))/(sqrt(x^2+y^2+z^2)dV
where E is the region bounded by the spheres
x^2+y^2+z^2=49 and
x^2+y^2+z^2=81???

math 
Count Iblis,
Integrate
exp(r^2)/r 4 pi r^2 dr from r = 7 to r = 9